Statistik
Datenanalyse, Wahrscheinlichkeitsverteilungen und Hypothesentests.
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math8 | critiquing data | analyzing misleading graphs assignment level …
a) Vertical axis does not start at 0, exaggerating differences. b) Biased title influences interpretation. c) Unclear y - axis labels hinder accurate comparison. ### Question 2: W…
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equations: linear combinations the system of equations shown is solved …
There are infinitely many solutions to the system because the equations represent the same line.
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a number cube with faces labeled from 1 to 6 will be rolled once. the n…
Sample space: {1, 2, 3, 4, 5, 6} Event of rolling a number from 3 to 6 : {3, 4, 5, 6}
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for each of the situations below, choose the action that will make the …
1. Kendra: Subtraction ($-$) 2. Beatrice: Multiplication ($\times$) 3. Alyssa: Addition ($+$) 4. Ellen: Division ($\div$) 5. Lois: Addition ($+$)
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luke is thinking of a number twice his age. the sum of the digits is 8.…
Luke is 13 years old.
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was 59 now 68 what is % of change? was 27 now 14 what is % of change?
1. Approximately 15.25% increase 2. Approximately 48.15% decrease
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practice exam set 1. the rectangle was 24 inches long and 18 inches wid…
1. $\frac{4}{3}$ 2. 90 3. $\frac{3}{5}$ 4. $\$3$ 5. Two and eight hundred eighty-three thousandths 6. (a) 50 (b) $\frac{5}{1}$ 7. Unmarked sides: 7 m and 10 m; Perimeter: 83 meter…
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20. compare and explain the reason for your answer: \\(\frac{32}{2} \bi…
$\frac{32}{2} = \frac{320}{20}$ The fractions are equal because both simplify to 16. Additionally, $\frac{320}{20}$ is equivalent to $\frac{32 \times 10}{2 \times 10}$, and multip…
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find the sample variance and standard deviation. 6, 49, 12, 50, 36, 25,…
B. $s^2 = 193.73$ Sample standard deviation: $13.92$
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5 on saturday, destiny spends \\(\\frac{1}{6}\\) of the day playing in …
\(\frac{17}{24}\)
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if the variance of a variable is 121, what is the standard deviation? (…
11
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compute the range and sample standard deviation for strength of the con…
The range is 1220 psi. $s = 496.2$ psi
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genesis and 3 of her friends went to a craft fair. it cost $6 per perso…
Including Genesis, 4 friends went to the fair. They each spent the same amount of money at the craft fair.
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genesis and 3 of her friends went to a craft fair. it cost $6 per perso…
Including Genesis, 4 friends went to the fair. They each spent the same amount of money at the craft fair.
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each of 6 students receives a craft kit containing y tubes of paint. ge…
The top tape diagram (with 6 sections labeled $y+4$, total labeled 42) represents the situation.
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suppose that a customer is purchasing a car. he conducts an experiment …
Sample mean for Car 1: $261.9$ mi / 10 gal Sample mean for Car 2: $257.4$ mi / 10 gal ### Additional Shape, Center, Spread Context: - **Center**: Car 1 has a higher average mileag…
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the weight of an organ in adult males has a bell - shaped distribution …
(a) 305 and 335 grams (b) 95% (c) 5% (d) 81.5%
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scores of an iq test have a bell - shaped distribution with a mean of 1…
(a) $68\%$ (b) $32\%$ (c) $0.15\%$
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number the units in each column from least to greatest. 10. ____ second…
1. second 2. minute 3. day 4. week 5. month ### Problem 11: Ordering year, day, century, millennium, hour from least to greatest
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the value of y varies directly with x, and y = 77 when x = 7. what is y…
132
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the value of y varies directly with x, and y = -16 when x = 4. what is …
$-48$
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kareem wrote the expressions shown below. 3.2 2.7 2.9 4.8 which pair is…
○ $\lfloor 4.8 floor$ and $\lceil 3.2 ceil$
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here are the hottest recorded temperatures (in °f) for each of fifteen …
| Temperatures (in °F) | Frequency | |----------------------|-----------| | 97.5 to 102.5 | 4 | | 102.5 to 107.5 | 5 | | 107.5 to 112.5 | 4 | | 112.5 to 117.5 | 2 | ### Part (b) (…
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at a local college, 164 of the male students are smokers and 246 are no…
\(\frac{82}{1025}\)
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the stem - and - leaf display below gives the test scores for the stude…
s: (a) 10 a.m.: \( \boldsymbol{48} \); 11 a.m.: \( \boldsymbol{46} \) (b) 10 a.m. (c) Each had the same
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sarah walked 1 mile yesterday. today she will walk at a rate of 3 miles…
A. The graph with y - intercept 1 and a linear increase (consistent with \( d = 3h+1 \))
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2. what do we call the process of estimating future data? 3. what do we…
2. Extrapolation 3. Interpolation
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4. student enrollment at your school has been steadily increasing. in 2…
1. b. extrapolation 2. Identifying a consistent enrollment trend from the 2014-2017 data (such as calculating the average annual change in enrollment) or having additional enrollm…
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4 which scatter plot does not show an appropriate line of best fit? a b…
C. The scatter plot with a steep downward line and data points showing a much shallower downward trend
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4 which scatter plot does not show an appropriate line of best fit? a b…
C. The scatter plot with a downward line where most data points lie below the line
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wn menus to review your choices. for each question, the two input pull …
1. For total electricity use (kw): - First dropdown: electricity use per house (kw/house) - Second dropdown: number of houses (houses) 2. For Question 3 (tons of fish per boat): -…
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there are 3 consecutive even integers that add up to 186. which integer…
60, 62, 64
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use quadratic regression to find a function that fits the following poi…
The quadratic function is \(-2x^2 - 4x + 9\), so the coefficient of \(x^2\) is \(-2\), the coefficient of \(x\) is \(-4\), and the constant term is \(9\). The values to fill in th…
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what is the distance, in units, between points l and m on the coordinat…
20 ### Question 16 (Sports Survey) #### Part a
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a city researcher wants to calculate the number of cars per hour that p…
1. Time period observed (hours) 2. Total number of CDs made (CDs) 3. Number of hiker groups (groups) 4. Flight 2 time (hrs)
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the manager of the west end theater wants to know how many tickets were…
1. Theater tickets: add 2. Cheese per shop: divide 3. Remaining acres: subtract 4. Number of guests: divide 5. Winnings per child: divide
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beatrice is taking inventory of the furniture in an office building she…
1. Beatrice: use conversion factor 2. Alyssa: add 3. Ellen: make conversion factor (or division, framed as a conversion factor) 4. Lois: add
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the difference between a job and a career is not always so black and wh…
1. For Liam's work: A job 2. For Isabella's work: A career --- ### Reflections Example Responses (illustrative): 1. Person with a job: - What is that person's job? Part-time retai…
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check for understanding match each term with its definition or descript…
- initiate → to start - isolationism → a foreign policy where a nation chooses to stay out of world affairs - evacuation → the process of removing something to safety - blitzkrieg…
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summit high school analyzes the college test scores of its students eac…
Question 1: C Question 2: D Question 3: Average, Range Question 4: By mistake, the other school sent the data for the wrong test; The data was handwritten, and the person reading …
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descriptive statistics the seaside inn analyzes the number of guests pe…
Question 1: B Question 2: A Question 3: Range, Average Question 4: The data was handwritten, and the person reading the data misread some digits; By mistake, the person entering d…
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descriptive statistics part 2 of 2 the seaside inn analyzes the number …
Question 1: C Question 2: D Question 3: Range, Average Question 4: By mistake, the person entering data removed the last digit of the number of guests when entering into the sprea…
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metro market analyzes the number of washers sold during the fall season…
Question 1: B. Line B Question 2: D. Line D Question 3: Range, Average Question 4: There was a mix-up with product IDs, with the ID for washers being mixed up with expensive furni…
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the garden inn analyzes the number of guests per week during the slow s…
1. B 2. A 3. Average, Range 4. By mistake, the person entering data added a zero to the end of the number of guests when entering into the spreadsheet; The data was handwritten, a…
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fred is examining the amount of caffeinated coffee of coffee drinkers. …
1
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a group of tourists were surveyed about the number of countries they ha…
0.55
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given the frequency table below, what is the relative frequency of the …
\(0.3\)
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question 8 · 1 point the following frequency distribution table contain…
If the question was to find the total number of countries, the answer is 35. But please clarify the exact question (e.g., find the mean GDP growth rate, median class, etc.) to get…
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the number of students enrolled in 17 different math classes at a large…
The class intervals for the histogram are \(21 - 26\), \(27 - 32\), \(33 - 38\), \(39 - 44\), \(45 - 50\) with frequencies \(1\), \(2\), \(7\), \(4\), \(3\) respectively. The hist…
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quinn is examining the amount of caffeinated coffee by coffee drinkers.…
The data are right - skewed.
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the pulled balls are listed in the below table 1 3 4 2 4 4 1 4 2 3 use …
The frequency distribution table is as follows: | Value (\(x\)) | Frequency (\(f\)) | |---------------|-------------------| | 1 | 2 | | 2 | 2 | | 3 | 2 | | 4 | 4 |
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marko and petra opened an online business and have recorded the number …
The histogram has 4 classes. The class intervals are \(13.9 - 16.9\) (frequency = 2), \(17.0 - 20.0\) (frequency = 1), \(20.1 - 23.1\) (frequency = 3), and \(23.2 - 26.2\) (freque…
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the ages of individuals taking a driver’s license test on a given day a…
4
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use a calculator to create a relative frequency distribution. what is t…
0.5
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velma is examining the hourly wage of college students. she collects da…
The frequencies increase as we move to the right of the histogram. (The option corresponding to this statement)
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in 2024, a new apartment building is built on manor street with 8.2 peo…
B --- # Question 2:
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a) à lécole primaire du village, il y a 350 élèves. les \\(\\frac{3}{7}…
200
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west stanton housing administration analyzes the number of people per b…
Question 1: B. Line at ~3 (matches 2.95) Question 2: B. Line at 3 (matches new median)
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descriptive statistics west stanton housing administration analyzes the…
Question 1: C Question 2: B Question 3: Average, Range Question 4: The apartment building was actually on the cross street, not on Manor Street; It was registered incorrectly as a…
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what is chiaroscuro? a. a painting technique that means dark - gray b. …
d. a painting technique that means light - dark
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a class is choosing a president, a vice president, and a treasurer. the…
12 ### Part (b)
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one spinner has two sections. they are marked a and b. another spinner …
10 ### Part (b)
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a class is choosing a president and a vice president. there are three s…
9 ### Part (b)
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diane must choose a shirt and a pair of pants for todays outfit. she ha…
\( 8 \)
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descriptive statistics participation module 2 packet 1. label each of t…
To solve this, we analyze each graph based on the definitions of symmetric, skewed, bimodal, or multimodal distributions: ### Graph A (Red) - The tail extends to the left (lower v…
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each bag below has 6 marbles. austin closes his eyes and picks a marble…
Bag A: unlikely Bag B: impossible Bag C: likely (For each bag, the correct options are: Bag A: ○ unlikely Bag B: ○ impossible Bag C: ○ likely)
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descriptive statistics the garden hotel analyzes the number of guests p…
Question 1: C Question 2: D Question 3: Range, Average Question 4: By mistake, the person entering data removed the last digit of the number of guests when entering into the sprea…
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each bag below has 7 marbles. abdul closes his eyes and picks a marble …
likely ### Bag B:
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a retrieved reformation o. henry 1 a guard came to the prison shoemakin…
B. Jimmy's identity as a criminal
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a retrieved reformation o. henry 1 a guard came to the prison shoe - sh…
Authors include symbols to add depth, meaning, and interest to their writings.
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a retrieved reformation 1 a guard came to the prison shoemaking, where …
A. Ben's dedication to his job
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a retrieved reformation 1 a guard came to the prison shoe - shop, where…
the rose from Anabel
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this signal, used at old north church, meant the british were coming by…
C. two lanterns (assuming the options are labeled A, B, C, D with C being "two lanterns")
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question 1 of 10 which of these actions may be prohibited by a court, d…
B. Publishing articles that encourage or are likely to lead to violence
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determine whether the data are discrete or continuous. miles driven per…
Continuous (the option: Continuous)
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classify the variable as nominal - level, ordinal - level, interval - l…
D. Nominal
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determine whether the data are discrete or continuous. number of apps f…
A. Discrete
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determine whether the data are qualitative or quantitative. number of g…
Quantitative
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determine whether the data are discrete or continuous. number of phone …
A. Discrete
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determine whether the data are qualitative or quantitative. the number …
Quantitative (the option: Quantitative)
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determine whether descriptive or inferential statistics were used. fift…
descriptive
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determine whether descriptive or inferential statistics were used. a su…
descriptive
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determine whether descriptive or inferential statistics were used. seve…
descriptive
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what is meant by a biased sample? a biased sample is a sample that is s…
A biased sample is a sample that is not representative of the population.
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why is information obtained from samples used more often than informati…
- Size of the population - Medical concerns (If collecting data involves a treatment) - Expense - Time
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in which of the following activities would probability not likely play …
B. Assigning grades
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choose the tasks included in the formal definition of descriptive stati…
- Collection of data - Organization of data - Summarization of data - Presentation of data
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part 2 of 2 in a census, researchers collect data on select the populat…
First "Select" dropdown: the entire Second "Select" dropdown: a part of
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classify each of the j.m. smucker company’s costs as one of the six bus…
a. Marketing b. Design/Development c. Production d. Distribution e. Distribution f. Customer Service g. Production h. Production i. Research & Development
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a select consists of all subjects under study while a select is a subgr…
- First "Select" (Part 1): Population - Second "Select" (Part 1): Sample - First "Select" (Part 2): the entire - Second "Select" (Part 2): a part of
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in statistics, what is a variable? a variable is a characteristic or at…
that can take on different values
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statistics is the science of conducting studies to collect, select, sel…
First "Select" dropdown: organize Second "Select" dropdown: summarize
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a tax consultant analyzes the distribution of income tax payments and f…
The mean is greater than the median.
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if the wrong word is used below, change it. if there is no error, click…
Submit Answer (as there is no error in the word usage; the word "accept" is appropriate in this context to mean the writer did not agree to or receive Vixen's manuscript edits).
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the table presents detailed tax data for 10 individuals, including thei…
$868$
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the table presents detailed tax data for 10 individuals, including thei…
$\$80,790$
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the table presents detailed tax data for 10 individuals, including thei…
511979312
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suppose the size of a population is n = 2000 and the sample size desire…
153
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the table presents detailed tax data for 10 individuals, including thei…
$78,507$
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a professor wants to randomly select 4 students to go to the board. she…
4, 11, 18, 25