Measures of Central Tendency

Front

What is the range of a set of data?

Back

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

Front

To find the ________, you put all numbers in order from least to greatest and find the number that is in the middle.

Back

Median

Front

In which situations is the mean an appropriate measure of central tendency?

Back

I. when the data set contains no outliers; II. when an exact average is needed.

Front

What is the mean of the following data set: 3, 7, 11, 11, 16?

Back

The mean is 9.6.

Front

What is the best measure of center for the data set: 108, 96, 96, 84, 108, 240, 84?

Back

Median because 240 is much higher than the other numbers in the data set.

Front

What is the definition of mean?

Back

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

Front

What is the definition of median?

Back

The median is the middle value in a data set when the numbers are arranged in order.

Front

What is the definition of mode?

Back

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

Front

How do you calculate the range of a data set?

Back

Subtract the smallest number from the largest number in the data set.

Front

When is the median a better measure of central tendency than the mean?

Back

When the data set contains outliers or is skewed.