9.1 Generalization and inference
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Items in this lesson
Slide 1 - Slide
Slide 2 - Slide
Slide 3 - Slide
What is a Population?
A
A specific group of individuals where you collect data from.
B
A conclusion based on a sample.
C
A collection of data from every person in a research group.
D
The entire group you want to draw (statistical) conclusions about.
Slide 4 - Quiz
What is a Sample?
A
A specific group of individuals where you collect data from.
B
A conclusion based on a sample.
C
A collection of data from every person in a research group.
D
The entire group you want to draw (statistical) conclusions about.
Slide 5 - Quiz
What is Inference?
A
A specific group of individuals where you collect data from.
B
A conclusion based on a sample.
C
A collection of data from every person in a research group.
D
The entire group you want to draw (statistical) conclusions about.
Slide 6 - Quiz
What is a Census?
A
A specific group of individuals where you collect data from.
B
A conclusion based on a sample.
C
A collection of data from every person in a research group.
D
The entire group you want to draw (statistical) conclusions about.
Slide 7 - Quiz
What Sampling Method is being used?
You want to select a sample of 100 employees of Company X. You assign a number to every employee in the company database from 1 to 1000, and use a random number generator to select 100 numbers
A
Simple random sample
B
Systematic sample
C
Stratified sample
D
Quota sample
Slide 8 - Quiz
What Sampling Method is being used?
You want to select a sample of 100 employees of Company X. The company has 800 female employees and 200 male employees, you want your sample to have the same female/male distribution as the population. You separate the employees in 2 groups, male and female. Then you select 80 woman randomly from the female group and 20 men randomly from the male group.
A
Simple random sample
B
Systematic sample
C
Stratified sample
D
Quota sample
Slide 9 - Quiz
What Sampling Method is being used?
You want to select a sample of 100 employees of Company X. All employees are listed in alphabetical order. From the first 10 numbers you randomly select a starting point: number 6. From number 6, every 10th person on the list is selected (6, 16, 26, 36, 46, and so on) until you have a sample of 100 people.
A
Simple random sample
B
Systematic sample
C
Stratified sample
D
Quota sample
Slide 10 - Quiz
What Sampling Method is being used?
You want to select a sample of 100 employees of Company X. The company has 800 female employees and 200 male employees, you want your sample to have the same female/male distribution as the population. You select random employees for your sample and note if they are male or female. When you have selected 80 females for your sample, you don't accept any more females in your sample (the same applies if you have 20 males in your sample).
A
Simple random sample
B
Systematic sample
C
Stratified sample
D
Quota sample
