統計と確率
データ分析、確率分布、仮説検定、統計手法。
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the equivalent ratios are $8: \\frac{1}{3}$, d $4:\\frac{1}{6}$ $\\bold…
$12:\frac{1}{2}$ (Note: Any ratio where the first term is 24 times the second term is valid, e.g., $24:1$, $12:\frac{1}{2}$, $3:\frac{1}{8}$)
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lesson 18 | session 2 3 nodin makes soap sculptures of sea turtles. eac…
1. Number of sea turtles: 8 2. Value of $k$: $-18$ 3. Cost of each postcard: $\$0.70$
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dillon walked a total of 6 kilometers by making 3 trips to school. how …
10 trips
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two thousand one hundred frequent business travelers were asked which m…
| City | Frequency | Relative Frequency | |---------------|-----------|--------------------| | Indianapolis | 115 | 0.055 | | Saint Louis | 400 | 0.190 | | Chicago | 1365 | 0.650 …
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practice: ratios and ratio tables6. find the missing values in the rati…
### Completed Ratio Table: | Meters | 8 | 4 | 6 | 10 | |--------|---|---|---|----| | Minutes | $\frac{1}{3}$ | $\frac{1}{6}$ | $\frac{1}{4}$ | $\frac{5}{12}$ | ### Equivalent Rati…
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however, other researchers in this field have questioned these findings…
Learning another language is **beneficial** in several ways. **Some studies** suggest it can help complete brain tasks and **delay cognitive decline**, decreasing the threat of Al…
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soon after lincolns election, several southern states decided to secede…
The state withdraws from the country.
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10. the houck family and roberts family took trains for their family va…
The Roberts family's train is traveling faster, by 1 mile per hour.
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summarizing: informational text — quiz — level h this diagram compares …
Similar experiments have produced different results, so more are needed to link bilingualism and brain function.
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13. -/1 points find all the zeros of the function. when there is an ext…
$x=4, \frac{1}{3}+i, \frac{1}{3}-i$ --- ### Second Function: $g(x) = x^5 - 8x^4 + 30x^3 - 68x^2 + 88x - 48$
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today 2. what is the probability of flipping three coins one time and e…
1. The probability of flipping three tails is $\frac{1}{8}$ 2. The probability of spinning a 5 and rolling a 5 is $\frac{1}{36}$
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2. what is the probability of flipping three coins one time and each co…
2. $\frac{1}{8}$ 4. $\frac{1}{36}$
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multiple select question select all that apply which of the following a…
- It has all the properties of interval-level data. - The zero point of the data is meaningful. - The ratio between two measures is meaningful.
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select all that apply which three of the following are not proper and e…
- Use samples that represent only a desired part of a population. - Report only those statistics that support his conclusions. - Remove outliers that bias the data too far in one …
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multiple select question select all that apply which of the following e…
A. The median price of a house in Detroit. B. The typical genre of music played on KCFR.
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multiple choice question what level of data is represented by the ages …
Ratio
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true or false question statistics knowledge is necessary to successfull…
True
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multiple choice question which of the following best describes interval…
The distance between values is a known unit of measure.
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multiple choice question which of the following best describes the role…
C. The statistician should strive to present analysis with clarity, honesty, and integrity.
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multiple choice question which of the following is classified as ordina…
A. Someone's ranking of their three favorite foods.
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use efficient methods in a photography club, about 48% of the members a…
First, round 48% to 50% (or $\frac{1}{2}$), a simple fraction for mental math. Round 26 (the number of girls) to itself (or 25 for simplicity). Since 50% means half the total club…
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three different options for school lunch were offered on friday. the ta…
Total lunches sold: 300 Total money earned: $\$1050$
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the number of sixth grade students accounts for 35% of the total number…
700 students
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name: 7-7 additional practice in 1-3, solve the rate problems. 1. jason…
Completed table values: - Time = 1 hour: Distance = 50 miles - Distance = 300 miles: Time = 6 hours Final time to travel 300 miles: 6 hours
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multiple choice question the nominal level of data describes what type …
Observations of a qualitative variable that can only be classified and counted.
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the table shows the number of minutes tim has for lunch and study hall.…
500 minutes
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multiple select question select all that apply which of the following a…
- The ratio between two measures is meaningful. - The zero point of the data is meaningful. - It has all the properties of interval-level data.
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... or those in favor of slavery will ensure that it is spread to the e…
1. A house divided against itself cannot stand. I believe this government cannot endure permanently, half slave, and half free. → The United States cannot survive forever if the c…
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select all that apply which of the following are the four levels of mea…
- Nominal-level - Ratio-level - Ordinal-level - Interval level
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melcher used 24% of the memory card on his digital camera while taking …
400
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multiple choice question which of the following variables is recorded a…
A. A man's shoe size.
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multiple choice question identify which one of the following is a conti…
The average weight of apples in a box at the market.
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of the students in the marching band, 55% plan to go to the school danc…
200 students
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7. the table shows the options zoes mother has for buying tickets to an…
The 6-pack of Student Tickets has the lesser cost per student ticket, with a cost of $21.00 per ticket compared to $21.50 for the individual ticket.
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multiple choice question which one of the following are properties of o…
B. The data can be ranked or counted.
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action movies make up 25% of saras dvd collection. if she has 16 action…
64 DVDs
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select all that apply which of the following are attributes of a discre…
- It can assume only certain values within a range. - It can be used to count items. - There are gaps between the values of this variable.
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multiple select question select all that apply which of the following e…
- The median price of a house in Detroit. - The typical genre of music played on KCFR.
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multiple choice question which of the following represents data recorde…
Brand of newly purchased TV.
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multiple choice question what are the two types of quantitative variabl…
Discrete and Continuous.
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multiple choice question which level of data gives the most information…
A. Ratio
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select all that apply identify all of the following items which are qua…
- The miles per gallon for a particular model of car. - The weight of a Siamese cat.
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select all that apply which of the following are attributes of a contin…
- It is typically the result of measuring something. - It can take on any value within a range of values. - There are no required gaps between values.
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multiple select question select all that apply which of the following a…
- Estimating the average weight in a box of apples by measuring the weight of five apples. - Counting the blue candies in a package of M&M's as a way to estimate the proportion of…
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3 6.5.5 practice 3 calculate the value of each expression by writing th…
$0.0002$
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multiple select question select all that apply which of the following a…
A. The number of customers using an ATM on a given day. B. The number of cars for sale on a used car lot.
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3 6.5.5 practice 3 calculate the value of each expression by writing th…
$0.0002$
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multiple choice question which is the best definition of a quantitative…
C. A variable that can be reported numerically
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multiple choice question which one of the following is a population in …
C. All of the automobiles sold in Canada in 2016.
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multiple select question select all that apply identify all of the foll…
A. The colors in a package of M&M's. C. A person's favorite food type. D. The species of trees in a park.
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multiple choice question what is descriptive statistics? methods of org…
Methods of organizing, summarizing, and presenting data in an informative way.
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what is inferential statistics?○ methods of calculating summary statist…
Methods of estimating a property of a population based on a sample.
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sociability and sometimes off-color humor. what is the meaning of the a…
characterized by joviality and enjoyment of food and drink
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true or false question descriptive statistics uses the data to make inf…
False
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multiple select question select all that apply which three of the follo…
A. Every eighth person on the class roster. B. Six randomly chosen books from the library. C. Ten apples selected from a grocery store bin containing 100 apples.
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multiple choice question which of the following is not part of the scie…
B. Choosing data that supports your conclusion.
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overly romanticized view, inns are castles and windmills are giants. wh…
naively idealistic
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multiple select question select all that apply which of the following e…
- The median price of a house in Detroit. - The typical genre of music played on KCFR.
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4. mr. farley used 4 pounds of hamburger to make 10 hamburger patties o…
0.4 pounds (or $\frac{2}{5}$ pounds) of hamburger per patty
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multiple choice question which of the following is the best definition …
The entire set of individuals, objects or measurements of interest.
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rest hundredth. side length of the safe: $6.1\\times10^{5}$ volume = $\…
$2.27 \times 10^{17}$
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select all that apply which of the following are reasons to study stati…
B. Statistical knowledge is needed to understand the world and be conversant in your career. C. Statistics are used to make personal and professional decisions D. Data is collecte…
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select all that apply which of the following are examples of descriptiv…
B. Creating a pie chart to show majors of students in your business statistics class. D. Calculating summary measures of the prices of houses sold in Las Vegas in January.
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multiple choice question how does statistics help us understand large a…
C. A good working knowledge of statistics is useful to organize and summarize information.
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multiple choice question the two categories of statistical study are: ○…
O descriptive statistics and inferential statistics
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true or false question the primary purpose of statistics is to present …
False
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iii. suffix: al b. definition: means pertaining to cheek or mouth 17. o…
17. Oncologist a. Word parts i. Prefix: None ii. Word Root(s): Onco- iii. Suffix: -logist b. Definition: A medical specialist who diagnoses and treats cancer. 18. Cranioplasty a. …
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multiple select question select all that apply which of the following a…
Google uses search engine data records to prioritize results for future searches. Retailers use product purchase data to manage the distribution of products and make marketing and…
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multiple choice question how has technology increased the need for stat…
B. Vast amounts of data are collected, and understanding it requires statistical knowledge.
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which is the graph of $f(x)=0.5(4)^x$?
The first graph (leftmost one with points at (1,2), (2,8), and approaching 0 as x decreases) is the correct graph of $f(x)=0.5(4)^x$.
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this homework is not calculator active. you will have 2 attempts. it is…
1. 31.25 2. A. $38000 \div 580$, B. $3800 \div 580$, C. $3.80 \div 0.58$
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a warehouse ladder can extend to 28 feet. how many inches is that? use …
336 inches
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weekly homework 2/2-2/6 this homework is not calculator active. you wil…
1. 31.25 2. (Note: Since the full list of expressions for question 12 is not visible, this part cannot be answered. For question 4, the answer is 31.25)
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activity 3 exploring the concept of \persuasion\ the article is entitle…
1. Example quadrant fill: | What I know | What I believe | |-------------|----------------| | Water boils at 100°C at sea level | My favorite sports team is the best | | I know th…
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4. after 1863, what did general grant want to do even if it meant thous…
crush large numbers of Confederate troops
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helpers on land5 land animals help each other, too. a bird called an ox…
A. that an important idea is next
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which graph shows exponential growth?
A. The first graph (top-left, curved upward starting near the x-axis)
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13. order these fractions from least to greatest: $\frac{1}{3}$, $\frac…
$\frac{7}{12}, \frac{2}{3}, \frac{3}{4}$
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12. amalia buys $3\\frac{7}{8}$ yards of material at the fabric store. …
$2\frac{1}{2}$ yards
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11. enrique is saving up for a bike that costs $198. so far, he has sav…
$\$18$
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peter jogs 3 miles in 27 minutes. find the unit rate in minutes per mil…
9 minutes per mile
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refer to the baseball 2021 data, which report information on the 30 maj…
| Variable | Type | |----------------|----------------| | League | Qualitative | | Wins | Quantitative | | Team Salary | Quantitative | | Attendance | Quantitative | | HR | Quanti…
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for the following situations, would you collect information using a sam…
a. Population b. Population c. Population d. Sample
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3 using the table, find the unit rate for each runner. runner laps time…
- Martha: 0.615 laps per minute - Allison: 0.64 laps per minute - Rachel: 0.625 laps per minute
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a ski club rents cross-country skis. write an explicit formula for the …
Explicit formula: $a_n = 7 + 5n$ Correct graph: B. (Graph with points at (1,7) is incorrect; the correct graph has points (1,12), (2,17), (3,22), (4,27) which is option B)
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5 explain the difference between a discrete and a continuous variable. …
Discrete variables can assume **countable, distinct separate values**, but continuous variables can assume **any value within a measurable range**
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use your rounded factors, $4 \\cdot 2$, to estimate $3.8 \\cdot 2.2$. $…
8
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explain the difference between a sample and a population. a is a subset…
A **sample** is a subset taken from a **population**. - Population: The complete set of all items/individuals of interest in a study. - Sample: A selected portion of the populatio…
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buying one movie ticket online costs $16.50, two tickets cost $30.50, a…
recursive: $a_n = a_{n-1} + 14.00$, $a_1 = 16.50$ explicit: $a_n = 2.50 + 14.00n$ The relationship is linear because the cost increases by a constant amount with each additional t…
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by multiplying with whole numbers. round the factors to the nearest who…
$4 \cdot 2$ Estimated product: $8$
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enzos profit has been falling. in december he made $900, in january he …
A. $a_1 = 900$ D. $a_n = a_{n-1} - 400$
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explain the difference between qualitative and quantitative variables. …
Qualitative data is non-numerical, categorical descriptive information, whereas quantitative data is numerical, measurable information representing quantities.
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for each of the following, determine whether the group is a sample or a…
a. Sample b. Population c. Population d. Sample
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a cook makes vegetable barley soup by mixing 2 pounds of barley into 7 …
10 pounds
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slate is a daily magazine on the web. its business activities can be de…
a. Ratio level of measurement b. Nominal level of measurement c. Ratio level of measurement d. Ratio level of measurement
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another look! each of the 6 members of the recycling club earned $3 rec…
1. El costo de 48 trofeos es $\$40$. 2. Hay 3 estudiantes en cada equipo.
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solve $4.36 \\cdot 9.3$ by multiplying with whole numbers. round the fa…
$4 \cdot 9$ Estimated product: 36
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constant of proportionality - table the values of $x$ and $y$ are propo…
1) Constant $k=4$; missing values: $x=4$, $y=20$, $x=2$ 2) Constant $k=\frac{1}{3}$; missing values: $x=12$, $y=5$, $y=3$ 3) Constant $k=\frac{1}{6}$; missing values: $y=2$, $x=18…
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another look! harry scores 394 points on level 1 of a video game. on le…
1. Jamie tiene 847 piezas de construcción ahora. 2. Se puede estimar redondeando los números a cifras más fáciles de calcular: redondear 875 a 880, 257 a 260 y 229 a 230. Restar $…
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mp analyze a problem what do you know? 1. your goal is to exercise for …
$7\frac{3}{4}$ hours