The Normal Distribution

What shape is a normal distribution curve?

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

Where can we locate the mean in the normal curve?

• On the left side of the curve.

• At the center of the curve.

• On the right side of the curve.

• With the outliers.

The Empirical Rule (68-95-99.7) can be applied only if data is ______________________ .

• Normally Distributed

• Positively skewed

• Negatively skewed

• Random

According to the empirical rule, what percentage of data falls within 1 standard deviation?

• 34%

• 68%

• 95%

• 99.7%

According to the empirical rule, what percentage of data falls within 2 standard deviations?

• 25%

• 68%

• 95%

• 99.7%

According to the empirical rule, how much of the data falls within 3 standard deviations? 

• 25%
• 68%
• 95%
• 99.7%

What is the total area under the normal curve in a standard normal distribution?

• 1

• 2

• 3

• 4

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

• 68%

• 95%

• 50%

• 99.7%

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%