Year 8 Statistics Progress Test Mainstream

A ______ is used to collect data from every member of a population.

If I survey a portion of the population, this would be called a....

• Census

• Sample

• Tally

• Secondary Source

Which is an example of Bias?

• Drawing names from a hat to ask people's favourite colour.

• Choosing every 4th student from the Homeroom roll to ask their favourite Subject.

• Asking people in Sydney who the best Football Team is.

If a sample is deemed to be unfair, it is referred to as ______

• Innapropriate

• Random

• Rigged

• Bias

If a fair 6 Sided die is rolled 120 times, what results would you expect to see.

• All numbers to be rolled exactly the same amount of times.

• All numbers to be rolled close to the same amount of times.

• Even numbers to be rolled more often.

• Odd numbers to be rolled more often.

The mean of the following data set is_____

24, 12, 4, 18, 89, 56, 42, 35

What is the median of this data set?

43, 24, 2, 7, 13, 73, 32, 45, 20, 20, 34

• 24

• 20

• 32

• 34

If 2 numbers in a data set appear an equal highest amount of times, then this means...

• The mode is undefined

• There is no mode

• They are both the mode

What is the Range of this data set?

210, 25, 78, 98, 164, 14, 78, 200, 111, 34, 17, 34, 201, 209

• 200

• 185

• 196

• 210

What is the mean number of aces served per match?

Round to 1 decimal place.

• 16.6

• 17.5

• 24.9

• 14.7