Stats Final Part I

Question 1

R squared

Answer 1

Percent of variance explained by x value

Question 2

P-Value

Answer 2

Rejects null hypothesis if less than .05

Question 3

What are the 2 conditions for t distribution?

Answer 3

Collect simple random sample from less than 10% of population
Verify there is little to no skew

Question 4

Paired Data

Answer 4

every observation in one set is connected to every observation in a different set

Question 5

What will change the Chi Square distribution graph?

Answer 5

Degrees of Freedom

Question 6

What is the chi square distribution parameter?

Answer 6

Degrees of freedom

Question 7

Line of Best Fit

Answer 7

Linear line that goes through the greatest amount of data points

Question 8

For numerical data what graph would you use?

Answer 8

Histogram

Question 9

What does Correlation stand for?

Answer 9

R

Question 10

With Categorical data what graph do you use?

Answer 10

Bar graph

Question 11

Chi Square

Answer 11

Measure of expectations versus results

Question 12

Degrees of Freedom

Answer 12

Influences shape, center and spread of chi square distribution graph

Question 13

Correlation

Answer 13

Strength of linear relationship between two variables

Question 14

What is the symbol for chi square?

Answer 14

χ²

Question 15

What are 2 conditions for chi square test?

Answer 15

Independent from all other cases

Sample size must be greater than 5

Question 16

Residual

Answer 16

Variation in the data after accounting for the line of best fit