If the number 8 is added to each data point in a sample, which of the following
descriptive measures would change?
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Mean
The mean and standard deviation of the grades of 500 students who took a statistics
test were 69 and 7, respectively. The grades have a bell-shaped distribution. Based on
this information, which one of the following is the best estimate of the number of
students with grades between 55 and 83?
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95%
, Consider the following sample data: 12, 13, 7, 5, 15, 18. Which one of the following
represents the value of the standard deviation?
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4.89
If a constant is added to each value in a given data set to produce a new data set,
which one of the following describes how the standard deviation of the new data
compares to the standard deviation of the original data set?
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Equal to
For the sample data shown here, which one of the following correctly lists the value
for the sample standard deviation? Data: 18, 19, 22, 20, 64, 24, 18, 23
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15.52
A large population has a bell-shaped distribution with a mean of 200 and a standard
deviation of 40. Which one of the following intervals would contain approximately
95% of the measurements?
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descriptive measures would change?
Give this one a try later!
Mean
The mean and standard deviation of the grades of 500 students who took a statistics
test were 69 and 7, respectively. The grades have a bell-shaped distribution. Based on
this information, which one of the following is the best estimate of the number of
students with grades between 55 and 83?
Give this one a try later!
95%
, Consider the following sample data: 12, 13, 7, 5, 15, 18. Which one of the following
represents the value of the standard deviation?
Give this one a try later!
4.89
If a constant is added to each value in a given data set to produce a new data set,
which one of the following describes how the standard deviation of the new data
compares to the standard deviation of the original data set?
Give this one a try later!
Equal to
For the sample data shown here, which one of the following correctly lists the value
for the sample standard deviation? Data: 18, 19, 22, 20, 64, 24, 18, 23
Give this one a try later!
15.52
A large population has a bell-shaped distribution with a mean of 200 and a standard
deviation of 40. Which one of the following intervals would contain approximately
95% of the measurements?
Give this one a try later!
