Measures of Central Tendency

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

• Mode

• Mean

• Range

• Median

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.

• Mean

• Mode

• Range

• Median

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

• Mean

• Range

• Mode

• Median

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

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

The following numbers were the result of data collected when students were asked how many pets they had in there home:

0, 0, 0, 1, 1, 1, 2, 2, 2, 2, 3, 3, 4, 6

What is the range of the data?

• 1.5

• 6

• 5

• 2

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

An OUTLIER in a set of data is a number that is far away from the rest of the numbers.

Identify the OUTLIER in this data set.

5, 8, 10, 11, 15, 53

• 5

• 53

• 0

• 15

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

Tags

CCSS.6.SP.A.2

CCSS.6.SP.A.3

CCSS.6.SP.B.5

The following are the different polos in your dresser drawer: 2 maroon, 4 gray, 3 black, and 3 white. What is the MODE of this data?

• 0

• 2 maroon

• 3 black and 3 white

• 4 gray

The following data shows the results for the number of books that a random sample of 20 students were carrying in their book bags: 0, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 4

What is the mean?

• 2.6

• 2.5

• 2

• 3