If the histogram of a distribution is right-skewed, which of the following is true?

The mean is greater than the median

For any normal distribution:

95% of observations are within 2 standard deviations of mean

The purpose of a Normal Probability Plot is to

Assess normality of a set of data

The z-score of an observation x is z=1.23. That means

x is 1.23 standard deviations above the mean

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Duplicate of AP Statistics Chapter 1 and 2 Review

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AP Statistics Chapter 1 and 2 Review

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1
If the histogram of a distribution is right-skewed, which of the following is true?
The median is greater than the mean
All of these are true
The mean is greater than the median
The mean and median are equal
2
For any normal distribution:
68% of observations are within 2 standard deviations of mean
98% of observations are within 2 standard deviations of mean
95% of observations are within 3 standard deviations of mean
95% of observations are within 2 standard deviations of mean
3
An observation is an outlier if it is larger than
Q3 + (1.5 X Q1)
Q3 + (1.5 X IQR)
Q1 - (1.5 x IQR)
Q3 - (1.5 x IQR)
4
One calculator function you NEVER use in AP Statistics is
1-Var Stats
binomcdf
normalcdf
normalpdf
5
The purpose of a Normal Probability Plot is to
extrapolate
Assess normality of a set of data
calculate the 5-number summary of a set of data
determine marginal and conditional distributions
6
Which measure of center is non-resistant to outliers?
Median
Neither mean nor median
Mean
Both mean and median
7
Quantitative data can be graphed with any of the following types of graphs EXCEPT
histogram
stem plots
boxplots
bar graphs
8
Which of the following is a CATEGORICAL variable?
Favorite member of the Cubs
Kahoot score
Height in inches
Grade Point Average
9
The five-number summary includes:
Min, Mean, Standard Deviation, Median, Max
Min, Q1, IQR, Q3, Max
Min, Q1, Mean, Q3, Max
Min, Q1, Median, Q3, Max
10
The z-score of an observation x is z=1.23. That means
x is 1.23 standard deviations above the median
The value of x is 1.23
x is 1.23 standard deviations above the mean
The mean of the distribution containing x is 1.23

Duplicate of AP Statistics Chapter 1 and 2 Review Flashcards | StudBud