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Mod4Les5

Which of the following is true about the normal distribution?
The mean, median, and mode are roughly equal
There are an equal number of values on both sides of the mean (symmetrical)
It is often referred to as a "bell curve."
All of these options
What percent of the values of a distribution are between 1 standard deviation below the mean and 1 standard deviation above the mean?
68%
34%
95%
99%
What percent of the values of a distribution are between 3 standard deviations below the mean and 3 standard deviations above the mean?
99%
95%
68%
34%
What percent of the values of a distribution are between 2 standard deviations below the mean and 2 standard deviations above the mean?
95%
34%
68%
99%
Which of the following characteristics of the normal distribution allows us calculate the percent of values that are between standard deviation values?
The normal distribution is symmetrical about the mean
The normal distribution is unimodal
The mean, model, and median are equal
All of these options
To determine the value for 1 standard deviation above the mean, we...
Add the standard deviation to the mean
Subtract the standard deviation from the mean
Add the standard deviation to the mean twice
Subtract the standard deviation to the mean twice
To determine the value for 1 standard deviation below the mean, we...
Subtract the standard deviation from the mean
Add the standard deviation to the mean
Add the standard deviation to the mean twice
Subtract the standard deviation to the mean twice
To determine the value for 2 standard deviations above the mean, we...
Add the standard deviation to the mean twice
Subtract the standard deviation to the mean twice
Add the standard deviation to the mean
Subtract the standard deviation from the mean
To determine the value for 2 standard deviations below the mean, we...
Subtract the standard deviation to the mean twice
Add the standard deviation to the mean twice
Subtract the standard deviation from the mean
Add the standard deviation to the mean
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