STATS MP1 TEST Review

Find the mean of the numbers below:

3, 2, 1, 3, 2, 1, 3, 2, 1, 3, 2, 1

• 3

• 2

• 1

• 4

The mean of four numbers is 10.

Three of the numbers are 9, 11 and 7.

Work out the fourth number.

• 9

• 13

• 11

• 15

Find the median of these numbers:
76, 82, 57, 93, 64, 72

• 74
• 57
• 72
• 73

What does this symbol represent?

• Standard Deviation

• Variance

• Mean Absolute Deviation

• Sigma

What is the mean?

• # happening the most
• the number in the middle
• biggest-smallest
• the average

What is the median?

• biggest- smallest
• average
• the middle #
• # that happens the most

Dylan wants to know how the students at his school rate the cafeteria.  He surveyed his school's basketball team to rate the school cafeteria. Is this a biased sample of the school's population?

• Yes, because it is a convenience survey
• No, the basketball team has the smartest students
• Yes, because it's voluntary survey
• No, he should have asked the football team

What sampling method are you using if you survey every 5th person who enters the room.

• Convenience

• Systematic

• Simple Random

What sampling method are you using if you survey the students in the school whose names are picked out of a hat?

• Convenience

• Systematic

• Simple Random

An independent research company wants to go door to door to survey people in the city of Fontana. The company decides to number all blocks within the city limit, randomly choose 1 block and survey all households on that block.

This is an example of:

• Simple Random Sample

• Stratified Random Sample

• Cluster Random Sample

• Systematic Random Sampling