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

For any normal distribution:

99.7% of observations are within 3 standard deviations of mean

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

x is 1.23 standard deviations above the mean

The purpose of a Normal Probability Plot is to

Assess normality of a set of data

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AP Statistics Chapter 1 and 2 Review

13 termsStudBud Administration98 plays

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Questions 13

Answers

1
If the histogram of a distribution is right-skewed, which of the following is true?
The median is greater than the mean
The mean is greater than the median
All of these are true
The mean and median are equal
2
Quantitative data can be graphed with any of the following types of graphs EXCEPT
boxplots
histogram
stem plots
pie charts
3
An observation is an outlier if it is less than
Q3-(1.5*IQR)
Q1+(1.5*IQR)
Q1-(1.5*IQR)
Q2-(1.5*IQR)
4
For any normal distribution:
95% of observations are within 2 standard deviations of mean
98% of observations are within 2 standard deviations of mean
68% of observations are within 2 standard deviations of mean
95% of observations are within 3 standard deviations of mean
5
One calculator function you NEVER use in AP Statistics is
binomcdf
normalpdf
normalcdf
1-Var Stats
6
Which measure of center is non-resistant to outliers?
Median
Neither mean nor median
Mean
Both mean and median
7
For any normal distribution:
99.7% of observations are within 3 standard deviations of mean
98.7% of observations are within 3 standard deviations of mean
95% of observations are within 3 standard deviations of mean
99.7% of observations are within 2 standard deviations of mean
8
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
The mean of the distribution containing x is 1.23
x is 1.23 standard deviations above the mean
9
An observation is an outlier if it is larger than
Q3 - (1.5 x IQR)
Q3 + (1.5 X IQR)
Q1 - (1.5 x IQR)
Q3 + (1.5 X Q1)
10
The purpose of a Normal Probability Plot is to
determine marginal and conditional distributions
extrapolate
Assess normality of a set of data
calculate the 5-number summary of a set of data
11
The five-number summary includes:
Min, Q1, Mean, Q3, Max
Min, Q1, Median, Q3, Max
Min, Mean, Standard Deviation, Median, Max
Min, Q1, IQR, Q3, Max
12
Which of the following is a CATEGORICAL variable?
Height in inches
Kahoot score
Favorite member of the Cubs
Grade Point Average
13
If members of a data set are measured in inches, the unit of measurement for the standard deviation is
inches squared
feet
standard deviation has no units
inches

AP Statistics Chapter 1 and 2 Review Flashcards | StudBud

AP Statistics Chapter 1 and 2 Review

13 termsStudBud Administration98 plays

AP Statistics Chapter 1 and 2 Review

Flashcards13 cardsFPractice quizPHost liveL

Questions 13

Answers

1
If the histogram of a distribution is right-skewed, which of the following is true?
The median is greater than the mean
The mean is greater than the median
All of these are true
The mean and median are equal
2
Quantitative data can be graphed with any of the following types of graphs EXCEPT
boxplots
histogram
stem plots
pie charts
3
An observation is an outlier if it is less than
Q3-(1.5*IQR)
Q1+(1.5*IQR)
Q1-(1.5*IQR)
Q2-(1.5*IQR)
4
For any normal distribution:
95% of observations are within 2 standard deviations of mean
98% of observations are within 2 standard deviations of mean
68% of observations are within 2 standard deviations of mean
95% of observations are within 3 standard deviations of mean
5
One calculator function you NEVER use in AP Statistics is
binomcdf
normalpdf
normalcdf
1-Var Stats
6
Which measure of center is non-resistant to outliers?
Median
Neither mean nor median
Mean
Both mean and median
7
For any normal distribution:
99.7% of observations are within 3 standard deviations of mean
98.7% of observations are within 3 standard deviations of mean
95% of observations are within 3 standard deviations of mean
99.7% of observations are within 2 standard deviations of mean
8
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
The mean of the distribution containing x is 1.23
x is 1.23 standard deviations above the mean
9
An observation is an outlier if it is larger than
Q3 - (1.5 x IQR)
Q3 + (1.5 X IQR)
Q1 - (1.5 x IQR)
Q3 + (1.5 X Q1)
10
The purpose of a Normal Probability Plot is to
determine marginal and conditional distributions
extrapolate
Assess normality of a set of data
calculate the 5-number summary of a set of data
11
The five-number summary includes:
Min, Q1, Mean, Q3, Max
Min, Q1, Median, Q3, Max
Min, Mean, Standard Deviation, Median, Max
Min, Q1, IQR, Q3, Max
12
Which of the following is a CATEGORICAL variable?
Height in inches
Kahoot score
Favorite member of the Cubs
Grade Point Average
13
If members of a data set are measured in inches, the unit of measurement for the standard deviation is
inches squared
feet
standard deviation has no units
inches