Mean, Median, Mode, and Range

Front

What is the definition of the median in a data set?

Back

The median is the middle value of a data set when the numbers are arranged in order from least to greatest. If there are two middle numbers, the median is the average of those two numbers.

Front

How do you find the mode of a data set?

Back

The mode is the number that appears most frequently in a data set. A data set can 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

What is the formula to calculate the mean of a data set?

Back

To find the mean, add all the numbers in the data set together and divide by the total number of items in the set.

Front

Can a data set have more than one mode?

Back

Yes, a data set can have multiple modes if two or more numbers appear with the same highest frequency.

Front

What is the median of the following data set: 3, 5, 7, 9, 11?

Back

The median is 7, as it is the middle value of the ordered data set.

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 set in order.

Front

What is the mode of the data set: 4, 4, 5, 6, 6, 6, 7?

Back

The mode is 6, as it appears most frequently in the data set.

Front

How do you determine the range of the following data set: 10, 15, 20, 25?

Back

The range is 25 - 10 = 15.

Front

What happens to the mean if you add a new number to the data set?

Back

The mean will change depending on the value of the new number relative to the current mean and the number of items in the set.