Normal Distribution

Front

What shape is a normal distribution curve?

Back

Bell curve

Tags

CCSS.6.SP.A.3

Front

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

Back

68%

Tags

CCSS.HSS.ID.A.4

Front

What percentage of data falls within 2 standard deviations in a normal distribution?

Back

95%

Tags

CCSS.HSS.ID.A.4

Front

What percentage of data falls within 3 standard deviations in a normal distribution?

Back

99.7%

Tags

CCSS.HSS.ID.A.4

Front

What is the mean in a normal distribution?

Back

The average of all data points, located at the center of the bell curve.

Tags

CCSS.6.SP.B.5D

CCSS.HSS.ID.A.2

Front

What is a standard deviation in a normal distribution?

Back

A measure of the amount of variation or dispersion of a set of values.

Front

What does it mean if data is normally distributed?

Back

The data follows a bell-shaped curve where most values cluster around the mean.

Front

What is the empirical rule?

Back

A statistical rule stating that for a normal distribution, approximately 68% of data falls within 1 standard deviation, 95% within 2, and 99.7% within 3.

Tags

CCSS.HSS.ID.A.4

Front

What is the significance of the area under the normal distribution curve?

Back

It represents the total probability of all outcomes, which equals 1.

Front

What is a z-score?

Back

A measure of how many standard deviations an element is from the mean.