Normal Distribution Quiz

Which of the following is a characteristic of a normal distribution?

• It is skewed to the right

• It is symmetric around the mean

• It has two peaks

• It is always negatively skewed

In a normal distribution, the mean, median, and mode are:

• All equal

• All different

• Mean is always greater than the median

• Mode is always greater than the mean

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

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

• 50%

• 68%

• 95%

• 99.7%

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CCSS.HSS.ID.A.4

The Empirical Rule states that approximately 99.7% of data in a normal distribution falls within:

• One standard deviation from the mean

• Two standard deviations from the mean

• Three standard deviations from the mean

• Four standard deviations from the mean

Tags

CCSS.HSS.ID.A.4

A normal distribution curve is also known as:

• A skewed curve

• A bell-shaped curve

• A rectangular curve

• A bimodal curve

The total area under a normal distribution curve is:

• 0.5

• 1.0

• 2.0

• 10.0

If a normal distribution has a mean of 50 and a standard deviation of 5, what is the z-score of a value 55?

• -1

• 0

• 1

• 5

Tags

CCSS.HSS.ID.A.4

If a dataset follows a normal distribution, which measure of center is most appropriate to describe it?

• Mean

• Median

• Mode

• Range

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

In a standard normal distribution, the mean is always:

• -1

• 0

• 1

• 100

Tags

CCSS.6.SP.A.3

What does a z-score tell us?

• The probability of an event occurring

• The number of standard deviations a value is from the mean

• The range of the dataset

• The total number of data points