7.SP.3-4 #2

The range is the difference between the highest and lowest values in a data set.

To find the median, arrange the data in ascending order and identify the middle value. If there is an even number of values, average the two middle values.

The mean is calculated by adding all the values together and dividing by the number of values.

Variability refers to how spread out or clustered the data values are in a data set.

A dot plot is a simple way to display data using dots above a number line, where each dot represents one occurrence of a value.

A box plot is a graphical representation of a data set that shows the median, quartiles, and potential outliers.

The IQR is the difference between the first quartile (Q1) and the third quartile (Q3) and measures the spread of the middle 50% of the data.

Removing the highest score can increase the mean if the remaining scores are lower than the mean.

The median score is the middle value of a data set when arranged in order.

Calculate the median for each data set and compare the values.