8-2: Mean, Median, Mode, Range

Front

What is the mean of a data set?

Back

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

Front

How do you find the median of a data set?

Back

To find the median, arrange the numbers in order from least to greatest and identify the middle number. If there is an even number of values, the median is the average of the two middle numbers.

Front

What is the mode of a data set?

Back

The mode is the number that appears most frequently in a data set. A data set may have one mode, more than one mode, or no mode at all.

Front

What is the range of a data set?

Back

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

Front

Can the mean be one of the data values in the data set?

Back

Sometimes, the mean can be one of the data values, but it is not guaranteed.

Front

What is the first step in calculating the mean?

Back

The first step is to add all the values in the data set together.

Front

If a data set has an even number of values, how do you find the median?

Back

You find the median by averaging the two middle numbers after arranging the data in order.

Front

What happens if all values in a data set are the same?

Back

If all values are the same, the mean, median, and mode will all be equal to that value.

Front

How do you determine the mode in a data set?

Back

Count how many times each number appears; the number that appears the most is the mode.

Front

Is it possible for a data set to have no mode?

Back

Yes, a data set can have no mode if no number repeats.