Normal Probability Curve

What shape is a normal distribution curve?

• Half curve
• Round curve
• Bell curve
• Square curve

What percent of a normal distribution lies outside of ±3 standard deviations?

• 99.7%

• .15%

• .3%

• 100%

Where can we locate the mean in the normal curve?

• to the left portion

• to the right portion

• at the center

• on the z - axis

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

• 68%
• 95%
• 99.7%
• 50%

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

• 68%
• 95%
• 99.7%
• 50%

What does this symbol represent?

• Mean
• Median
• Mode 
• Standard Deviation

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

• 68%
• 95%
• 99.7%
• 50%

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

• 68%
• 95%
• 99.7%
• 50%

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

• 68%
• 32%

• 95%
• 50%

The Skewness value of Normal Probability Curve is

• +1

• -1

• 0

• $\pm1$