Statistiques
Analyse de données, distributions de probabilités et tests d'hypothèses.
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the teachers at a middle school counted how many computers they had in …
6
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after hip surgery, your physical therapist tells you to slowly return t…
9
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the school district compared how many swings each elementary school has…
4
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a librarian kept track of how many times some people went to the librar…
5
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what is the mode? -4 -8 -5 -9 -8 -5 -2 -5 -9 -2
\(-5\)
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what is the median? 1 0 -4 0 5 -1
\(0\)
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error analysis: example 1 (1 error): michelle and justin surveyed their…
To address the error analysis for these examples, we'll examine each one: ### Example 1 - **Error**: Misunderstanding skewness. A right - skewed (positively skewed) distribution h…
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what is the range? 0 -7 -4 -4 0 -9
\(9\)
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4. if you take the number of points the panthers football team scored i…
10
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todd created a box plot based on this data set: 41 50 51 52 52 52 52 52…
# Explanation: ## Step1: Analyze original data Original data: \(41, 50, 51, 52, 52, 52, 52, 52, 60, 60, 61, 68, 75, 90\) (14 data points). - Median (Q2): For \(n = 14\), median is…
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debra is helping her little brother learn multiplication facts. each we…
- the number of times Debra's brother got 40 out of 40 correct - the lowest number of correct answers
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what are the errors? important ideas (4 errors): 1) a distribution desc…
1. Corrected statement 2: The shape of a distribution can be described as symmetric, skewed left, or skewed right. 2. Corrected statement 3: Different representations (dot plots, …
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what are the domain and range of this function? (7, -6) (-4, -10) (0, -…
B. domain: \(\{-4, 0, 4, 7\}\) range: \(\{-10, -8, -6, 6\}\) (where B is the option with domain \(\{-4, 0, 4, 7\}\) and range \(\{-10, -8, -6, 6\}\))
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what are the domain and range of this function? (5, 10) (4, 6) (-7, -9)…
B. domain: \(\{-7, -3, 0, 4, 5, 7\}\) range: \(\{-9, -4, -1, 6, 10\}\)
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what are the domain and range of this function? (-1, 10) (4, -5) (10, 9…
domain: \(\{-1, 4, 6, 10\}\) range: \(\{-5, 6, 9, 10\}\) (the last option in the given choices)
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what are the domain and range of this function? (-7, -7) (9, 7) (-10, -…
B. domain: \(\{-10, -7, -2, 5, 8, 9\}\) range: \(\{-8, -7, -2, 5, 7\}\)
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what is the domain of this function? (4, -6) (-1, 10) (5, 10) (-3, 0) (…
{-3, -1, 4, 5, 10} (the first option)
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language development: word study identify the choice that best answers …
D. overflowing
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what is the range of this function? (5, 5) (3, 1) (8, 10) (-3, -7) (-1,…
\(\{-7, 1, 5, 9, 10\}\) (the second option)
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what is the range of this function? graph of a coordinate plane with se…
\(\{-1, 2, 3, 5\}\)
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part a which of the following sentences best states a central idea of \…
Part A: B. Purposefulness, dedication, and belief in oneself are the keys to success. Part B: A. "The only thing that separates you from CEOs in corner offices or scientists in la…
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a school conducts a recipe contest in which 1 student gets first place,…
The top - left "Probability Distribution" graph (with $P_X(x)$ on y - axis from 0 to 0.8, "No prize" bar around 0.7, small bars for 1st, 2nd, 3rd and a bar around 0.2 for 4th).
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a family has two children. if b represents a boy and g represents a gir…
The probability distribution \( P_X(x) \) is the table with: | \( X \) | \( P_X(x) \) | | ---- | ---- | | 0 | 0.25 | | 1 | 0.5 | | 2 | 0.25 |
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a spinner contains four sections: red, blue, green, and yellow. joaquin…
The correct probability distribution is the fourth one (the one with \( P(X = 0)=0.5625 \), \( P(X = 1)=0.375 \), \( P(X = 2)=0.0625 \)): | Yellow: \( X \) | Probability: \( P_X(x…
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taylor surveys students in one grade level who own at least one pet. sh…
The bottom - right probability distribution graph (the fourth one)
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two fair dice, one yellow and one blue, are rolled. the value of the bl…
symmetric
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a teacher assigns a score from 1 to 4 to each student project. the tabl…
3
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a spinner has two equal sections, one green and one orange. the spinner…
The top - right probability distribution graph (with \( P(X) \) values ~0.125 for \( X = 0 \) and \( X = 3 \), ~0.375 for \( X = 1 \) and \( X = 2 \)) represents the probability d…
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which of the following represents a valid probability distribution? pro…
Probability Distribution B (where \( X \) has \( P(x) \) values \( 0 \) (for \( x = 1 \)), \( 0.45 \) (for \( x = 2 \)), \( 0.16 \) (for \( x = 3 \)), and \( 0.39 \) (for \( x = 4…
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a spinner is divided into two equal parts, one red and one blue. the se…
The probability distribution table with \( X = 0 \) (0.25), \( X = 1 \) (0.5), \( X = 2 \) (0.25) (the second table among the four options).
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a teacher asks her students to write down the number of hours studied, …
1.50
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focus question: when is it appropriate to use the mean and median to su…
- It is best to use the mean when the shape of the distribution is **symmetric (e.g., normal distribution)** because the mean is a good measure of central tendency when data is ev…
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what type of data distribution is shown on the graph? positively skewed…
positively skewed
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classifying data distributions the probabil dropdown viewed. the mean i…
To analyze the data distribution: ### Step 1: Identify the Distribution Shape The bar graph (probability distribution) shows values of \( x \) (1, 2, 3, 4, 5, 6) with probabilitie…
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classifying data distributions the probability distribution the mean is…
The probability distribution is negatively skewed. The mean is less than the mode. The mode is 6.
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finding the probabilities of multiple events defective parts: x | proba…
0.04 ### Second Sub - Question: Probability of finding defects
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identifying a valid probability distribution which of the following rep…
Probability Distribution A (with \( X \) values 0,1,2,3 and \( p(x) \) values 0,0,0,1) is the valid probability distribution.
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identifying the probability distribution graph a 4 - section spinner is…
The first graph (with Y - axis labeled P(X) from 0 to 0.6, X=0 bar ~0.6, X=1 ~0.4, X=2 ~0.06)
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the fair spinner shown is spun 2 times. the set of possible outcomes ar…
0.375
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finding the mean of a probability distribution x | probability: p(x) 0 …
\( P(X = 3) = 0.2 \) ### Part 2: Find the mean of the probability distribution
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what is the probability of spinning a yellow? □/4 what is the probabili…
\( \frac{1}{4} \) (so the numerator is 1, filling 1 in the first box) ### Second Sub - Question: Probability of spinning a yellow or a green
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properties of probability distributions the fair spinner shown is spun …
- The probability of each outcome is equal. - The outcomes have a uniform probability distribution.
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classifying data distributions what type of the graph? negatively skewe…
less than the median
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(370831030) properties of probability distributions classifying data di…
For the mean: less than the median For the mode: 3
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classifying data distributions what type of data distribution is shown …
Distribution type: negatively skewed The mean is less than the mode The mode is 3 (Assuming the dropdowns: for "The mean is", options like "less than the mode", "equal to the mode…
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1. in the year 10% % of the world’s population will speak equaling abou…
Latin ### Question 3
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9 on winter days, rachel feeds each of her chickens \\(\frac{3}{4}\\) c…
$\frac{1}{12}$ cup
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an ad for seat belts claimed that proper usage of seat belts educes the…
D. If seat belts eliminated all fatalities, it would result in a 100% reduction, so it is not possible to reduce fatalities by more than 100%.
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pedro has a part - time job at an ice skating rink selling hot cocoa. h…
The rate of change in the expected number of hot cocoas over the day's high temperature.
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kalantras math teacher plots student grades on their weekly quizzes aga…
The change in expected quiz score for every additional one hour students spend on their homework.
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question fawzias math teacher plots student grades on their weekly quiz…
A prediction of a student's quiz score if they spent 1 hour on their homework.
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autumns math teacher plots student grades on their weekly quizzes again…
The change in expected quiz score for every additional one hour students spend on their homework.
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levi keeps track of the number of people inside a music hall to attend …
At 7:30, Levi should expect about 184.3 people in the music hall.
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scatter plot practice due: january 20 at 3:00 pm grade: 86% answer heig…
An expected height of 168.4 centimeters when the femur has a length of 50 centimeters.
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test content page 2 of 25 question 2 the word teratogen comes from the …
B. monster
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jamal decides to research the relationship between the length in inches…
45 inches
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the scatter plot and line of best fit below show the length of 10 peopl…
72 centimeters
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renaissance means ebirth\. in history, the renaissance refers to a peri…
One example is 1990s baggy denim (including wide-leg jeans and overalls). This trend was dominant in the 1990s, fell out of mainstream popularity in the 2000s and 2010s, and has e…
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carlos won 83 lollipops playing the bean bag toss at his schools game n…
A. 8
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type the correct answer in each box. use numerals instead of words. if …
s: - The maximum profit the florist will earn from selling celebration bouquets is $ \boldsymbol{675} $. - The florist will break - even after \( \boldsymbol{20} \) one - dollar d…
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how can you describe 0.15? when a whole is divided into 100 equal parts…
1. 0.15 can be described as **fifteen hundredths** (or as the fraction $\frac{15}{100}$, which simplifies to $\frac{3}{20}$). 2. 15
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adult tickets for a concert cost $10.00, and student tickets cost $12.0…
adult tickets: 610 student tickets: 1220
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question 4 __________ is a perception, thought, or feeling someone want…
Meaning
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moshi and her best friend have phrases they use with each other that ha…
Moshi and her best friend have decided what these symbols mean.
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marshall mcluhan used the term ________ to describe the medias ability …
A. global village
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graphing. independent and dependent variables terry dailey multiple-cho…
B. the independent variable and on the x axis
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hannah plays basketball\ is a true statement and \bashir flips a coin a…
both of the connected statements are true; the combined statement's truth cannot be confirmed (we only know one part is true, the other's truth is unspecified)
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if \triangle def is a right triangle\ is a false statement, \its chilly…
True (Or statements are true if at least one of the statements is true.)
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rohan is the manager at a restaurant. the graph shows the relationship …
24
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gary and heather each make cheesy potatoes using different recipes. the…
Gary 2. For every [x] oz of potatoes, Gary uses [y] oz of cheese (and comparison):
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the data in the figure below represents the number of stars earned by 1…
21
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determine whether the given value is from a discrete or continuous data…
C. A discrete data set because there are a finite number of possible values.
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determine whether the underlined number is a statistic or a parameter. …
Parameter because the value is a numerical measurement describing a characteristic of a population. (The option corresponding to this description among the given choices, e.g., if…
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in a study of all babies born at hospitals in one state, it was found t…
C. The value is a parameter because it describes some characteristic of a population.
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state whether the data described below are discrete or continuous, and …
A. The data are continuous because the data can take on any value in an interval.
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determine whether the underlined number is a statistic or a parameter. …
Statistic because the value is a numerical measurement describing a characteristic of a sample. (The option corresponding to this description, likely the third option in the list:…
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the graph below shows the rate of change for the number of people in a …
300 people
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and try to solve the problem below. jack has $\frac{2}{3}$ pint of wate…
$\frac{1}{6}$ pint
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solve the problem. show your work. darin and his mom go camping. the tr…
The length of the trail to the overlook is $\frac{7}{8}$ mile, and the length of the trail to the river is $\frac{3}{8}$ mile.
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karma says that the fraction \\(\\frac{7}{8}\\) is equivalent to \\(\\f…
Kama is not right. To determine if $\frac{7}{8}$ and $\frac{3}{4}$ are equivalent, we find a common denominator (8). Rewrite $\frac{3}{4}$ as $\frac{3\times2}{4\times2}=\frac{6}{8…
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question 9 of 10 which of the following words means the opposite of gen…
B. Méchant.
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question 9 of 10 which of the following words means the opposite of gen…
B. Méchant
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4) what is 15% of 200?
30
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jay had as many nickels as dimes and twice as many quarters as his nick…
$\$20$
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the graph shows the total weight of a container of cat food, y, as a fu…
2 ### Second Sub - Question: Weight of each cup of cat food
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the graph shows the total weight of a container of cat food, y, as a fu…
2 ### Second Sub - Question: Weight of each cup of cat food
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two factory plants are making tv panels. yesterday, plant a produced 80…
16000
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suppose 8 quarts of a solution that is 45% antifreeze is mixed with 12 …
(a) 7.56 quarts (b) 37.8 %
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the table represents a function. what is f(5)? | x | f(x) | | -4 | -2 |…
\( f(5) = -8 \) (corresponding to the option with -8)
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the table represents a function. what is f(-2)? | x | f(x) | | -6 | 3 |…
1
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consider the function represented by the table. | x | f(x) | | --- | --…
A. \( f(9)=5 \)
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consider the function represented by the table. | x | f(x) | | --- | --…
A. -7
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assume that 12 jurors are randomly selected from a population in which …
$P(x=7)=0.0148$ $P(x\leq7)=0.0180$ Yes, it suggests discrimination. The probability of getting only 7 Hispanic jurors is very low (0.0148, less than the typical 0.05 threshold for…
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martin has 2 parents, 4 grandparents, 8 great - grandparents and so on.…
B. 510
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the number line shows an unknown number, z. number line with 0, z (betw…
\(-z\) is negative.
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a student at corona del sol is making the claim that the probability a …
a. $H_0$: $p = 0.68$ $H_A$: $p > 0.68$ b. Type I error: Concluding that the proportion of 17-year-olds at Corona del Sol with a part-time job is higher than 0.68, when in reality …
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question 15 choose the correct words to fill in the blanks below. more …
1. round 2. less 3. more 4. horizontal axis; vertical axis 5. estimate
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in a recent survey of 1080 students, 975 of them would like to recommen…
Point estimate: $0.903$ 95% confidence interval: $(0.885, 0.920)$
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it is known that 64% of americans personally worry a great deal about f…
○ 1, 2, and 4
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self-check 5.2 cs040: exploring computer science 1 dimitrova 4th / unit…
### Question 1 Table (for 31): |128|64|32|16|8|4|2|1| |-|-|-|-|-|-|-|-| |0|0|0|1|1|1|1|1| ### Question 2 Table (for 96): |128|64|32|16|8|4|2|1| |-|-|-|-|-|-|-|-| |0|1|1|0|0|0|0|0|