Statistics Measure of Central Tendency

Mrs. Jones surveyed the class for the number of letters in their given first name. The data is recorded below.
{5, 8, 6, 5, 4, 9, 8, 7, 6, 3, 8, 7, 5, 6, 7, 8}
What is the interquartile range of the data?

• 2

• 3

• 7

• 8

The data shows the test scores of four different classes.
Algebra: {87, 91, 64, 88, 74}
Geometry: {98, 86, 84, 91, 79}
Statistics: {87, 72, 84, 88, 91}
Pre-Algebra: {63, 82, 78, 71, 74}
Which class had the smallest interquartile range?

• Algebra

• Geometry

• Statistics

• Pre-Algebra

What is the mode of the data below?

12 , 14 , 5 , 12 , 5 , 12 , 11

• 5

• 12

• 5 and 12

• 8.5

What is mode?

• the number that occurs the most in a data set

• the average of all the numbers

• the middle number in the data

• the range of the data

What is the mean of the data below?

1 , 5 , 10 , 11 , 20

• 10

• 19

• 9.4

• 9.1

It is the science concerned with developing and studying methods for collecting, analyzing, interpreting and presenting empirical data.

• Statistics

• Research

• Mathematics

• Measures of Central Tendency

It is the measure of central tendency used when one data is more important than the other data.

• mean

• median

• mode

• weighted mean

Your grade in Statistics are 88, 91 and 90.

What should be your next grade to get an average of 90?

• 91

• 89

• 90

• 88

What is another word for mean?

• average

• sum

• middle

• frequent

Find the mode from these test results:

90, 80, 77, 86, 90, 91, 77, 66, 69, 65, 43, 65, 75, 43, 90.

• 43

• 77

• 65

• 90