L5 - Sampling

Question 1

What is Inferential statistics?

Answer 1

A set of methods that enable us to make
probabilistic statements about the
characteristics of populations on the basis
of sample information.

Question 2

What is a population?

Answer 2

Is any entire collection things from which
we may collect data. can be finite or infinite

Question 3

What is a Sample?

Answer 3

a group of units selected from the larger group. is a finite quantity that is intended to represent a population

Question 4

What are the two categories for sampling

Answer 4

Probability (Random selection) and Non-probability( No random Selection)

Question 5

What is Simple Random Sampling?

Answer 5

All members of a population have equal probability to be selected for a sample

Question 6

What is Stratified Random Sampling?

Answer 6

Ensuring a sample is representative of different characteristics/types in a population (sample within each subgroup)

sample is proportionate or disproportionate.

Question 7

Proportionate Stratified Random Sampling

Answer 7

Taking samples from stratified groups, in proportion to the population. (Proportionate/equal sample fractions)

Question 8

Disproportionate Stratified Random Sampling

Answer 8

Taking samples from stratified groups that are disproportionate to the population size (Equal sample sizes)

Question 9

What is Sampling Fraction?

Answer 9

The ratio of the sample size to the population size

Question 10

What are Sampling Designs?

Answer 10

Probability and Non-Probability Sampling