30-3 Statistics Review

What word is associated with mean? (in mathematics)

• most common

• many

• average

• middle

What word is associated with mode?

• most common

• many

• average

• middle

Which word is associated with median?

• most common

• many

• average

• middle

I am counting how many pets my friends have. Here is the numbers for my 5 friends:

1 2 0 4 2.

What is the mean?

• 1.9

• 9

• 2

• 2.25

I am counting how many pets my friends have. Here is the numbers for my 5 friends:

1 2 0 4 2.

What is the median?

I am counting how many pets my friends have. Here is the numbers for my 5 friends:

1 2 0 4 2.

What is the mode?

Aimee is playing on a sports team. Here is the number of players that have been showing up for the first 10 games.

12 13 12 14 15 20 19 12 13 12

What is the median?

To find the trimmed mean, you have to take away the same number of values from the top and bottom, and then calculate the mean.

• True

• False

Jerry and Brayden are applying for the same job. Who's weighted mean is higher?

Answer explanation

20x7 = 140

30x8 = 240

10x3 = 30

70x4 = 80

+ = 490

/80 = 6.13

20x10 = 200

30x6 = 180

10x3 = 30

20x10 = 200

+= 610

/80 = 7.63

To find the weighted mean, you have to find the sum of the weighted values divided by the sum of the weights

• True

• False