7th Grade Stats - Unit 5

Question 1

What is Random Sampling?

Accepted Answer

People have a equal chance of being picked within a sample.

Question 2

Mr. Miller picked every third person to sample music preferences. This is any example of...

Accepted Answer

Systematic

Question 3

________ tends to produce "representative samples" and supports valid inference.

Accepted Answer

Random Sampling

Question 4

Sample Size is the ...

Accepted Answer

Number of individual pieces/ people in a study

Question 5

The term "Stratified" is a type of sample that...

Accepted Answer

Divides a population into groups, then randomly samples each

Question 6

What's the sample size of items sampled if 489 out of 896 boots have a Nike Swoosh on them?

Accepted Answer

489 boots

Question 7

Two measures of center are the ...

Accepted Answer

Median and Mean

Question 8

Another name for a "representative sample" is a ...

Accepted Answer

Unbiased sample (or Subset) (or Random)

Question 9

What are Inferences?

Accepted Answer

Conclusions from the data provided

Question 10

What is the IQR for this set of numbers? 18, 23, 24, 17, 19, 20, 32

Accepted Answer

6

Question 11

Two measures of variation are the ...

Accepted Answer

Range and IQR

Question 12

Mark & Tom sampled any 20 ladies out of 240 for their study in the mall. The sample type is...

Accepted Answer

Random

Question 13

We randomly sample 10, 20, & 30 people from Town A, B and C in the same sample. This is ...

Accepted Answer

Stratified Sampling

Question 14

What is the median for this set of numbers? 18, 23, 24, 17, 19, 20, 32

Accepted Answer

20

Question 15

Saige picked kids who liked the same movie genres as she does for her sample... This is ...

Accepted Answer

Biased Sampling

Question 16

Informal "Comparative" Inferencing is when ...

Accepted Answer

When you analyze two or more data sets & make inferences

Questions 16