AP Stats Chapter 2 Review
Flashcard
•
Mathematics
•
11th Grade
•
Practice Problem
•
Hard
+1
Standards-aligned
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a z-score?
Back
A z-score indicates how many standard deviations an element is from the mean. It is calculated using the formula: z = (x - μ) / σ.
2.
FLASHCARD QUESTION
Front
How do you calculate a z-score?
Back
To calculate a z-score, subtract the mean (μ) from the value (x) and then divide by the standard deviation (σ): z = (x - μ) / σ.
3.
FLASHCARD QUESTION
Front
What is the mean in a data set?
Back
The mean is the average of a set of numbers, calculated by adding all the values together and dividing by the number of values.
Tags
CCSS.6.SP.B.5C
4.
FLASHCARD QUESTION
Front
What is standard deviation?
Back
Standard deviation is a measure of the amount of variation or dispersion in a set of values. A low standard deviation means that the values tend to be close to the mean.
5.
FLASHCARD QUESTION
Front
What does it mean to find a cutoff score for a certain percentile?
Back
Finding a cutoff score for a certain percentile means determining the score below which a given percentage of scores fall.
Tags
CCSS.6.SP.B.5C
6.
FLASHCARD QUESTION
Front
How do you find the cutoff score for the bottom 35%?
Back
To find the cutoff score for the bottom 35%, you can use the z-score corresponding to the 35th percentile and then convert it back to the original score using the mean and standard deviation.
Tags
CCSS.HSS.ID.A.4
7.
FLASHCARD QUESTION
Front
What is the probability of a value falling within a certain range?
Back
The probability of a value falling within a certain range can be found using the z-scores for the endpoints of the range and looking up the corresponding probabilities in the standard normal distribution table.
Tags
CCSS.HSS.ID.A.4
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