Mr Squiggle bought 13 pencils.

He bought:

• one packet of 10 pencils for $14.50, and
• another packet of 3 pencils for $5.65

What is the mean price of the 13 pencils?

In Wadonga, there are 29 538 people.

Each day, the average person uses 168 litres of water.

Which of these gives the best estimate for the total number of litres of water used in Wadonga each day?

Five students do a standing long jump at their athletics carnival and the length of their jumps, in centimetres, are recorded in the table below.
 

 
If Kath's distance is removed from the data, what happens to the mean distance that is jumped from this group?

A survey asked 9 students in Year 7 how many times they had travelled overseas.
 

 
Which of the following is true for this data?

Here is a set of 8 scores.

What will change if score 28 is removed from the set?

A kindergarten class has 15 students. The average (mean) weight of a child in the class is 24 kilograms.

5 new children join the class and the average class weight increases to 26 kilograms.

What was the average weight of the 5 new children?

Percy bought 8 packets of cough lollies for $18.00.

The average cost of one packet is

The points scored by a basketball team in their first 11 games of the season is recorded.

In the 12th game, they scored 58.

Which of these values would increase?

Lea collects comic books.

She sells some of them.

The selling prices are listed below.

What is their mean (average) price?

In 4 games of netball, Finn scores 7, 14, 11 and 11 goals.

In the fifth game, she scores a season high 23 goals.

Which of these will not change after Finn's fifth game.

A college basketball team has 10 players with the following heights.

What is the range of heights?

A school's drama class puts on a play over five nights.

The play is open to the public and the numbers of tickets sold are shown in the table below.
 

 
The cost of each ticket was $15.

What was the mean amount of money collected from ticket sales per night?

In 2009, an estimated 1.7 million registrations were made by Australian children to participate in organised sport outside school.

The average cost of one registration was estimated at  $392.

What was the total amount paid for registrations in 2009?

Riley's basketball team has 5 players.

The height of each player is listed below (in cm):

What is the median height of these players?

The mean height of students at a Year 9 class is 155 cm.

The median height of the same class is 145 cm.

A new student joins the class who is 165 cm tall.

Which of these is possible?

Over 5 games, Ramesh recorded the following scores when playing cricket.

What was his mean score?