Central Tendency Review

Imagine you have collected the ages of all participants in a local marathon, resulting in an odd number of ages. How is the median age determined?

• It is the age that appears most frequently among the participants.

• It is the middle age when all ages are arranged in order.

• It is the sum of all ages divided by the total number of participants.

• It is the highest age minus the lowest age among the participants.

Answer explanation

The median age is the middle age when all ages are arranged in order, making it the correct choice among the options provided.

The median of a data set can be found by...

• subtracting the minimum from the maximum

• choosing the middle number

• choosing the number that occurs most

• finding the sum of the numbers and then dividing by the total amount of numbers in the data set

The mode of a data set can be found by...

• subtracting the minimum from the maximum

• choosing the middle number

• choosing the number that occurs most

• finding the sum of the numbers and then dividing by the total amount of numbers in the data set

The mean of a data set can be found by...

• subtracting the minimum from the maximum

• choosing the middle number

• choosing the number that occurs most

• finding the sum of the numbers and then dividing by the total amount of numbers in the data set

The median of the numbers 34, 32, 12, 65, and 45 is...

• 34

• 32

• 12

• 65

There can be more than one mode

• True

• False

Find the mean of 1, 2, 3, 4, and 5

• 7

• 3

• 4

• 2

At Donald's Donuts the number of donut holes in a bag can vary. Help Donald find the mode of the number of donut holes per bag described in the sample below:
{12,10,10,10,13,12,11,13,10}

• 13

• 12

• 11

• 10

The heights of six students in a class are given below:
158cm     172cm      164cm
164cm     167cm      159cm
 However, there were actually seven students in the class, and the mean height in the class was 165 cm. What was the height of the unknown student?

• 164 cm

• 166 cm

• 171 cm

• 169 cm

Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is Roger's median score?

• 127

• 155

• 156

• 193