Areas Under the Standard Normal Curve

Front

What is the area under the standard normal curve to the left of Z=0.27?

Back

0.6064

Front

What percent of the data is within one standard deviation of the mean in a normal distribution?

Back

68%

Front

What percent of the data is within two standard deviations of the mean in a normal distribution?

Back

95%

Front

What percent of the data is within three standard deviations of the mean in a normal distribution?

Back

99.7%

Front

What is the area under the normal standard curve between z = -0.84 and z = 1.28?

Back

0.6992

Front

What is the area to the left of a z-score of 0.75?

Back

0.7734

Front

What is the area to the right of a z-score of -1.96?

Back

0.9750

Front

What does a z-score represent in a normal distribution?

Back

The number of standard deviations a data point is from the mean.

Front

What is the total area under the standard normal curve?

Back

1 (or 100%)

Front

If the z-score is 0, what does it indicate about the data point?

Back

The data point is exactly at the mean.