Changes in Mean Median and Mode

The numerical average of the data best describes -

• Median

• Mode

• Mean

The middle value of a data set in ranked order best describes -

• Median

• Mode

• Mean

The piece of data that occurs most frequently

• Mode

• Median

• Mean

How do you calculate the mode for a set of data?

• Add the numbers in the data set together and dividing the sum by the number of data pieces in the set.

• Place the numbers in the data set in order from least to greatest and find the middle value. If there is an even number of pieces of data, find the numerical average of the two middle values.

• Place the numbers in the data set in order from least to greatest and identify the number (or numbers) that occur most frequently.

Ms. Andrey claims the average score on a quiz in her class was 25. Mr. Luna claims the average score on a quiz in his class is 25.

• Ms. Andrey used the mode, while Mr. Luna used the median.

• Ms. Andrey used the mean, while Mr. Luna used the mode.

• Both teachers used the mean.

• Both teachers used the median.

Archie listed his test scores by subject: Science: 82, 85, 79, 83 Math: 92, 88, 81, 80 History: 82, 85, 98, 90 English: 75, 89, 89, 91 Which subject has a mode?

• Science

• Math

• History

• English

Archie listed his test scores by subject: Science: 82, 85, 79, 83 Math: 92, 88, 81, 80 History: 82, 85, 98, 90 English: 75, 89, 89, 91 What is the median of Archie's science scores?

• 82.5

• 82

• 82.25

• 85

What will happen to Archie's test score average in Math if he makes a 98 on his next test?

• His average will stay the same.

• His average will increase.

• His average will decrease.

If Archie makes an 85 on his next science test, which two things will happen?

• Archie's science test score average will increase.

• The median will not change.

• There will be a mode of 85.

• Archie's science test score average will decrease.

If outliers are removed, what changes more significantly the mean or median?

• Mean

• Median