Normal Distribution

Front

What shape is a normal distribution curve?

Back

Bell curve

Front

What percent of newborns weigh 5 pounds or less at birth if the average weight is 7.5 pounds with a standard deviation of 1.25 pounds?

Back

2.5%

Front

Is the normal curve symmetrical about the mean? (True/False)

Back

True

Front

If the mean is 30 and the standard deviation is 5, what label (number) is written at the blue circle if the value is 15?

Back

15

Front

What percent of dairy products last between 12 and 15 days if the shelf life is normally distributed with a mean of 12 days and a standard deviation of 3 days?

Back

34%

Front

Define normal distribution.

Back

A probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.

Front

What is the empirical rule in relation to normal distribution?

Back

Approximately 68% of the data falls within one standard deviation of the mean, 95% within two standard deviations, and 99.7% within three standard deviations.

Front

What does the area under the normal distribution curve represent?

Back

The total probability of all outcomes, which equals 1.

Front

What is the significance of the mean in a normal distribution?

Back

It is the central point around which the data is distributed and is also the highest point of the curve.

Front

What is standard deviation in the context of normal distribution?

Back

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