AP Statistics Chapter 1 Review

Front

What is the mean salary of all workers if the mean salary of female workers is $35,000 and male workers is $41,000?

Back

It could be any number between $35,000 and $41,000.

Front

What types of variables are recorded when noting age, marital status, and earned income of a sample?

Back

2 quantitative, 1 categorical.

Front

Why is the bar graph displaying student preferences for parties misleading?

Back

The vertical axis scale should start at 0.

Front

What does a standard deviation of 16 years in house age indicate?

Back

The age of the houses in the sample typically varies by about 16 years from the mean age.

Front

What is the third quartile in a statistics test score dotplot for 40 students?

Back

44.

Front

Define 'mean' in statistics.

Back

The mean is the average of a set of numbers, calculated by dividing the sum of the values by the number of values.

Front

What is a 'quantitative variable'?

Back

A quantitative variable is a variable that can be measured numerically.

Front

What is a 'categorical variable'?

Back

A categorical variable is a variable that can take on one of a limited, fixed number of possible values, assigning each individual or other unit of observation to a particular group.

Front

What is the purpose of a dotplot in statistics?

Back

A dotplot is used to display the distribution of a dataset, showing individual data points.

Front

What does the term 'quartile' refer to in statistics?

Back

A quartile is a type of quantile that divides a ranked dataset into four equal parts.