Frequency Table Mean

When finding the mean from a frequency table, we can remember "MAD" to help us. What does it stand for?

• The Madness - an old band in the 70's & 80's

• Multiply. Add. Divide.

Read at this example question. The mean from this table is...

• The average number of sweets per person

• The average number of sweets per packet

• The total number of sweets

• The average number of sweets per row

Read at this example question. The mean from this table is...

• the average number of tickets won per game

• the average number of tickets won per person

• the average number of tickets won per row

Read at this example question. The mean from this table is...

• The average number of cats per class

• The total number of cats in Catland

• The average number of cats per child

• Whose cat has the meanest claws

Read at this example question. The mean from this table is...

• The average number of times the internet has been accessed per day

• The average number of times the internet has been accessed per household

• The average number of internet devices per household

• The total number of memes seen by Year 9 in 2020.

Read at this example question. The mean from this table is...

• The average number of games played per season

• The average number of goals conceded per game

• The average number of goals the team scored per game

• The average number of goals Robbie scored per game

To calculate the mean, what goes in the column on the right? (Hint: M.A.D)

• Goals + number of matches

• Goals x number of matches

• Goals - number of matches

The next step of M.A.D is to add. Where will I find the total number of goals Robbie scored?

• A

• B

• C

Families at a school in Manchester were surveyed, and the number of children in each family was recorded. The results of the survey are shown alongside.

Calculate the mean.

A teacher recorded the number of children who used the school's playground each day for 50 days.

Estimate the mean of the data.