In order to find the ____________, we add up all of the numbers in the data set and then divide the sum by the number of numbers.

• Average

• Mode

• Upper Quartile

• Median

The ____________ is the measure of central tendency that represents the middle number in a set of data.

• Mode

• Average

• Principal

• Median

The number that appears the most in a data set is commonly known as the ___________.

• Mean

• Range

• Mode

• Average

The median of the top 50% of the number values in the data set is known as the _________________.

• Upper Extreme

• Principal

• Upper Quartile

• Range

Match the following vocabulary with the definitions

• Mode

• the middle value, when the data is ordered from least to greatest

• Median

• the difference between the largest and smallest values in a data set

• Mean

• the most frequently occurring value(s)

• Range

• the average of values, sum of all values divided by how many values

What is the MEDIAN of this data

Mathematical Equivalence

ON

What is the median of the following numbers? 1, 2, 2, 8, 9, 20

• 2

• Mean

• 7

• Outlier

• 19

• Median

• 20

• Mode

• 5

• Range

How do we find the median when there are exactly TWO numbers in the middle of the data set?

• We add up all of the numbers and divide by the number of numbers.

• Subtract the lower extreme from the upper extreme.

• Add the two numbers together and divide the sum by 2.

• Use the formula I = P x r x t

The following data set represents the responses from students when they were asked how many siblings they had: 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 4, 7 What is the average number of siblings for this set of students?

• About 2.6

• 6

• About 18

• About 2.4

Tags

CCSS.4.MD.B.4

Measures of Central Tendency help us to relate numbers in a set of data to each other. For example, if the average student’s grade in your math class is an 81, we know that someone who has a grade of 97 is performing well ABOVE the average in that class. Amongst the following choices, which grade would represent a student performance that is considered well BELOW average?

• 80

• 75

• 77

• 62