Measure of Central Tendency of Ungrouped Data

What is the Mode of the following set of data? 5, 12, 10, 7, 5, 15, 6, 2, 9

This statistical number is the middle number of the data set.

• Mean

• Mode

• Median

• Range

Nimsaj took a sample of 25 pieces of data. She added all the data and then divide it by 25. What measure of central tendency did she use?

• Mean

• Median

• Mode

• Range

The following data is given. 4, 6, 7, 7, 12. Nimsaj calculated a measure of central tendency and got 7.2 Which measure of central tendency did she just calculate?

• Mean

• Median

• Mode

• Range

What is the median for the following set of data? 19, 28, 29, 10, 22, 25, 31

• 22

• 24.5

• 25

• 28

The mode score on the 7th grade Math Test was 94. Which of the following interpretation is correct?

• 99 was the highest score on the test

• No students scored below 50

• More students received a 94 than any other score.

• A score of 91 was below average.

Kalli has test scores 75, 94, 100, 62. What is the range of her test scores?

• 28

• 38

• 72

• 100

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

• Range

• Mode

• Median

• Mean

In which of the following situations would the mean be an appropriate measure of central tendency?

I. When the data set contains no outliers

II. When using categorical data

III. When an exact average is needed.

IV. When the middle value is needed.

• II and III only

• I, III, and IV only

• I and III only

• All of the above

Malik has test scores of 93, 82, 86, and 75. What must be his score on his next test to have an average of 86?

• 94

• 86

• 88

• 90