Week 6

Question 0

Anything ________ 0.15 is insignificant.

Answer 0

Above

Question 1

A correlation higher than 0.2 signifies what?

Answer 1

A strong correlation

Question 2

Anything below 0.15 means your finding is ________.

Answer 2

Significant

Question 3

0.15 represents what?

Answer 3

the percentage that what you found was due to chance

Question 4

What happened with President Landon?

Answer 4

Survey sent to people with telephones + people with cars showed results that he’d win the election. What actually happened was that he got 8 votes while Roosevelt got 523.

Question 5

What was the problem with surveying in the case of President Landon?

Answer 5

The people sampled were disproportionately republic because those with cars/phones were wealthier + tended to vote more republic

Question 6

What went wrong with polling in the issue of President Dewey?

Answer 6

Gallop stopped polling 8 weeks before election. At this time many people were confused about who to vote for and changed their minds.

Question 7

What kind of sampling did Gallop use?

Answer 7

Quota sampling: you make a list of characteristics and choose subjects to fill them.

Question 8

In which cases would we not need to sample?

Answer 8

1) when every member of a population is identical
2) when you CAN study an entire population
3) census: when you try to study everyone in a population

Question 9

What is a target population?

Answer 9

Entire set of individuals that study findings can be generalized to

Question 10

What is a sampling frame?

Answer 10

List of all elements in a population

Question 11

A sample is a:

Answer 11

Subset selected from the population

Question 12

If a sample has good generalizability, this means:

Answer 12

The findings of the sample can be generalized to the population from which the sample was selected.

Question 13

Representativeness:

Answer 13

Sample that “looks like” the population from which it is drawn (in all respects relevant to the study)

Question 14

The difference between characteristics of sample and characteristics of the population is known as:

Answer 14

Sampling error

Question 15

Non-probability sampling is what happens when:

Answer 15

We don’t know the probability of any element being chosen

Question 16

Probability sampling:

Answer 16

When every person has the same probability of being selected for the sample

Question 17

Most basic type of probability sampling in which you make a list of every element in a population and select sample randomly

Answer 17

Simple random sampling

Question 18

Type of probability sampling in which you select the first element randomly, then select based on intervals *periodicity: can be biased

Answer 18

Systematic random sampling

Question 19

What is stratified random sampling?

Answer 19

Type of probability sampling in which you use known info about a population to stratify them. *distinguish all elements on a relevant characteristic

Question 20

What is cluster sampling?

Answer 20

Naturally occurring groups of population; selecting elements within a cluster

Question 21

When you change your sampling because you get something interesting from men that you’d like to observe in women is an example of:

Answer 21

Purposive sampling: theoretical ideas suggest who to interview next

Question 22

Availability sampling is an example of:

Answer 22

Non-probability sampling

Question 23

Snowball sampling occurs through an ________, person who gives info about another.

Answer 23

Informant; you start with one person and then spread out into their social network

Question 24

The _________ the sample, the ________ your sampling error.

Answer 24

Larger; lower

Question 25

Devah Pager’s study of employment opportunities had findings with a very strong _______ ____________.

Answer 25

Race effect