4-1 Automobile Ads (Halloween Edition)

Front

What is the mode in a data set?

Back

The mode is the value that appears most frequently in a data set.

Front

How do you find the mode of the following data set: 12, 10, 10, 10, 13, 12, 11, 13, 10?

Back

The mode is 10, as it appears most frequently.

Front

What is the median in a data set?

Back

The median is the middle value when the data set is ordered from least to greatest.

Front

How do you find the median of the following data set: 3, 17, 17, 11, 8, 13, 5, 18?

Back

First, order the data: 3, 5, 8, 11, 13, 17, 17, 18. The median is the average of the two middle numbers (11 and 13), which is 12.

Front

What are piecewise functions?

Back

Piecewise functions are functions that are defined by different expressions or rules over different intervals.

Front

Can you give an example of a piecewise function?

Back

An example of a piecewise function is: f(x) = { x^2 for x < 0; x + 1 for x >= 0 }.

Front

How do you calculate sales tax?

Back

Sales tax is calculated by multiplying the purchase price by the sales tax rate.

Front

If George purchased a used car for $8,500 and the sales tax is 5%, how much is the sales tax?

Back

The sales tax is $425, calculated as $8,500 * 0.05.

Front

What is the formula for calculating the mean of a data set?

Back

The mean is calculated by adding all the values in the data set and dividing by the number of values.

Front

What is the difference between mean, median, and mode?

Back

Mean is the average, median is the middle value, and mode is the most frequent value in a data set.