Normal Dist. Quick Quiz

What shape is a normal distribution curve?

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

Use the following information and the Empirical Rule to estimate the answer.

The ages of golfers are normally distributed, with a mean of 38 and a standard deviation of 4.

Find the percentage of golfers that are between 30 and 46 years old.

• 68%

• 94%

• 95%

• 99.7%

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

• 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%

Which is a normal distribution graph?

• 
• 
• 
• 

35 is

• mean

• variance

• standard deviation

• 1st quartile

Compare these two distributions.

• Same mean different standard deviation

• Same standard deviation different mean

Compare these two distributions.

• Same mean different standard deviation

• Same standard deviation different mean

1.  Which best describes the shaded part of this normal distribution graph?  

• All data that is one or higher.
• All data that is one or more standard deviations above the mean.
• All data that is between 1 and 3.
• All data that is above the mean.

Given a mean of 75 and a standard deviation of 7, how many students out of 500 would score between 68 and 82

• 11

• 2

• 340

• 498