Sampling
Bias
Quick Random Math
Riddles
100

If these were the answers to a survey, what might the question have been? 2, 10, 7, 5, 3, 8, 10 

...

100

It is perfectly okay if you collect data that is biased. True or False.

False. 

100

What is a? 40 = a x 5

8

100

What invention lets you look right through a wall?

A window 

200

A teacher puts everyones name on a piece of paper and puts it in a bag. She chooses who will answer one of her questions by picking a paper with a name from the bag. What type of sampling is this?

Simple Random Sampling

200

Toys R Us wants to know where their shoppers are traveling from. They only ask customers who spend more than $14. Is this an example of sampling bias? Why or why not?

Yes, this is an example of sampling bias as customers who spent less than $14 are not being represented. 

200

How may faces does a rectangular prism have?

6

200

What is always in front of you but can’t be seen?

The future

300

Holly wants to know what subjects the teachers at her school enjoy teaching the most. She surveys 4 teachers from each division. What type of sampling is this?

Stratified Random Samping

300

Holly wants to know what subjects the teachers at her school enjoy teaching the most. She surveys 4 teachers from each division. Is this an example of sampling bias? How do you know?

No, it is not an example of sampling bias. She asked 4 teachers in each division which means each division would be represented equally.

300

What is 3 to the power of 3?

27

300

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What color are the stairs?

There are no stairs

400

Toys R Us wants to know where their shoppers are traveling from. They ask every 7th person to provide their postal code at checkout. What type of sampling is this?

Systematic Random Sampling

400

What type of bias is this? : A firefighter asks people on the street if they have ever considered starting a forest fire.

Measurement Bias

400

Solve this problem: 100 - 50 x 3 + 6 

-44

400

Mary has four daughters, and each of her daughters has a brother. How many children does Mary have?

5