AP Stats Semester 1 Review

Front

What is the shape of the data when it is skewed to the right?

Back

The tail on the right side of the distribution is longer or fatter than the left side.

Front

What is the mean and standard deviation of GPAs at a local high school?

Back

Mean: 2.9, Standard Deviation: 0.6

Front

What percentage of students have a GPA between 2.3 and 3.5 in a normal distribution?

Back

68% of students fall within one standard deviation of the mean.

Front

What does the shaded region represent when it includes both A and B?

Back

It represents the combined probability of events A and B occurring.

Front

What is the mean number of accidents per week at a company?

Back

Mean: 6.4 accidents per week.

Front

What is the standard deviation of accidents per week at a company?

Back

Standard Deviation: 1.5 accidents.

Front

What proportion of weeks would you expect to have less than 5 accidents if the mean is 6.4 and standard deviation is 1.5?

Back

Approximately 17.62% of weeks.

Front

Identify the sampling method: A community college student interviews the first 100 students to enter the building.

Back

Convenience sampling.

Front

What is a normal distribution?

Back

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

Front

What is the empirical rule in statistics?

Back

In a normal distribution, approximately 68% of data falls within one standard deviation, 95% within two, and 99.7% within three standard deviations.