Unit 1 Lesson 5 - Normal Distribution

What shape is the normal distribution curve?

• Circular

• Square-shaped

• Linear

• Bell-shaped

Tags

CCSS.HSS.ID.A.4

What percentage of data lies within one standard deviation of the mean in a normal distribution?

• 95%

• 50%

• 99.7%

• 68%

Tags

CCSS.HSS.ID.A.4

Which standard deviation value indicates that data is within two standard deviations from the mean?

• 99.7%

• 50%

• 68%

• 95%

What does a Z-score of 0 indicate about the data point?

• It is below the mean

• It is above the mean

• It is at the mean

• Data is not available

What does a negative Z-score signify?

• The data point is an outlier

• The data point is at the mean

• The data point is above the mean

• The data point is below the mean