Final Exam Chapter Questions

Question 1

• How does the sample population relate to the whole population?

Answer 1

you are picking a group of people form the larger group so it can be inferenced back to that group of people.

Question 2

• How does inference relate to choosing a population?

Answer 2

you are generalizing the results of a sample to the whole. if the sample groups represents some larger group then the findings can be inferences

Question 3

• What is stratified Random Sampling? Explain

Answer 3

100 total 
20 freshman
20 sophomores
20 juniors 
20 seniors 
20 super seniors

Question 4

• Why are Post Hoc tests used in statistical analysis?

Answer 4

they help when the sample is not randomly selected. want to find generalizations to the larger group and this test will allow it to happen. also looks at comparing intact groups or groups within the sample tat are not randomly formed.

Question 5

• What is effect size?

Answer 5

the standardized value that is the difference between the means divided by the standard deviation.
ES= (M1-M2)/ s

Question 6

• What is correlation causation and how is it used in analysis?

Answer 6

correlation does not mean a cause

Question 7

• What is the purpose of a prediction equation in analysis?— page 143

Answer 7

the greater the correlation between the variables the more accurately one can be predicted from the other

Question 8

• How is an ANOVA used in analysis?

Answer 8

a test that allows the evaluation of the null hypothesis between tow or more group means

Question 9

Chi-squared method Restrictions

Answer 9

• no % or Ratios
• no small samples
  -total of the expected frequencies and the totla of the observed must be the same
  -

Question 10

Read

Answer 10

the journals 5 and 6

• look at
• participants
• methods
• outcomes