Year 8 Statistics Progress Test Mainstream

A (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 (a)  

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