Standard Deviation of Frequency Distribution

According to the normal distribution, what percentage of data falls within 1 standard deviation?

• 25%

• 68%

• 95%

• 99.7%

What is the standard deviation of this distribution? (how far is it from the mean to the first stdev line?)

• 1010

• 20

• 60

• 40

This data is normally distributed.  What percent of the data is in the shaded region?

• 68%

• 95%

• 99.7%

• 50%

The data is _____ standard deviation(s) from the mean.

• 1

• 2

• 3

Approximately ​ (a)   of the data lies within 2 standard deviations of the mean.​

• 95%

• 50%

• 99.7%

• 68%

What is the standard deviation on this Normal Curve?

• 6

• 12

• 34

• 18

List each set of data by color from the lowest standard deviation to the highest standard deviation.

• blue, green, pink, red

• red, pink, green, blue

• pink, green, red, blue

• blue, green, red, pink

What does standard deviation represent?

• How many different variations are in the data set.

• How the population varies compared to the sample.

• How spread out each data value is from the mean.

• How often the most popular choices in a sample were picked compared to the least popular choices

According to the normal distribution, how much of the data falls within 3 standard deviations?

• 25%

• 68%

• 95%

• 99.7%

This data is normally distributed.  What percent of the data is in the shaded region?

• 68%

• 95%

• 99.7%

• 50%