68-95-99.7 rule

What is the percentage of data that falls within three standard deviations of the mean?

• 99.7%

• 98.7%

• 95%

• 100%

What is the percentage of data that falls within two standard deviations of the mean?

• 68%

• 99.7%

• 95%

• 98%

What is the percentage of data that falls within one standard deviation of the mean?

• 67%

• 65%

• 72%

• 68%

Scores on a certain standardized test have a mean of 500, and a standard deviation of 100. How common is a score between 600 and 700? Calculate the probability.

• 2.5%

• 2.35%

• 16%

• 13.5%

Scores on a certain standardized test have a mean of 500, and a standard deviation of 100. How common is a score between 300 and 500? Calculate the probability.

• 49.85%

• 47.5%

• 50%

• 83.85%

Scores on a certain standardized test have a mean of 500, and a standard deviation of 100. How common is a score between 200 and 600? Calculate the probability.

• 47.5%

• 48.85%

• 50%

• 83.85%

Scores on a certain standardized test have a mean of 500, and a standard deviation of 100. How common is a score between 200 and 700? Calculate the probability.

• 99.7%

• 95%

• 97.35%

• None of the Above

What is the Range for 1 Standard Deviation away 68%?

• 400-600

• 500-700

• 400-700

• 300=700

What is the Range for 2 Standard Deviations away 95%

• 400-700

• 300-600

• 300-700

• 200-800

What is the Range for 3 Standard Deviations Away 99.7%

• 200-700

• 300-800

• 300-700

• 200-800