Standard Deviation Visually

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

• 68%

• 95%

• 99.7%

• 50%

Which of the following is a measure of spread, or variability?

(select all that apply)

• Interquartile Range

• Standard Deviation

• Mean

• Median

• Range

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

Without doing any calculations, which of the distributions shown (A, B, or C) has the largest standard deviation?

• Distribution A

• Distribution B

• Distribution C

• The standard deviations are equal because the ranges are equal.

Without doing any calculations, which of the distributions shown (A, B, or C) has the largest standard deviation?

• A

• B

• C

Which curve has the smallest standard deviation?

• A

• B

• C

What is the standard deviation on this Normal Curve?

• 6

• 12

• 34

• 18

The ages of the employees at Company A tend to be closer together, than those at Company B.

• True

• False

If a ball needs to be hit exactly 300 ft, which batter is more reliable to hit that distance?

• Batter A

• Batter B

• Both

• Neither

What does this symbol represent?

• Standard Deviation

• Variance

• Mean Absolute Deviation

• Sigma