Math 1 Unit 1 Review

Front

What is the mean in a data set?

Back

The mean is the average of a set of numbers, calculated by adding all the values together and dividing by the number of values.

Front

What effect does adding a high value to a data set have on the mean?

Back

Adding a high value to a data set increases the mean.

Front

What is the median in a data set?

Back

The median is the middle value when the numbers are arranged in order. If there is an even number of values, the median is the average of the two middle numbers.

Front

What is the mode in a data set?

Back

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

Front

What is the interquartile range (IQR)?

Back

The interquartile range (IQR) is a measure of variability that describes the range of the middle 50% of a data set, calculated as the difference between the first quartile (Q1) and the third quartile (Q3).

Front

When is the mean the most appropriate measure of center?

Back

The mean is most appropriate when the data is symmetrically distributed without outliers.

Front

When is the median the most appropriate measure of center?

Back

The median is most appropriate when the data is skewed or has outliers.

Front

What does a boxplot represent?

Back

A boxplot visually represents the distribution of a data set, showing the median, quartiles, and potential outliers.

Front

What does the length of the box in a boxplot indicate?

Back

The length of the box in a boxplot indicates the interquartile range (IQR), which shows the spread of the middle 50% of the data.

Front

What is standard deviation?

Back

Standard deviation is a measure of the amount of variation or dispersion in a set of values.