Chapter 4- Variability Flashcards by Ariana Williams | Brainscape

Q

What is the equation of the population variance?

A

σ=√SS/N

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Define:

Population Variance

A

The mean squared deviation

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Define:

Variance

A

Variance= SS/N

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

What is the equation for sample variance?

A

S^2= SS/n-1

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

What is the equation of sample standard deviation?

A

s=√SS/n-1

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

What is the equation for the sum of squares?

A

SS= Σx^2- (Σx)^2/N

How well did you know this?

1

Not at all

2

3

4

5

Perfectly

Q

Define:

Degrees of Freedom

A

The number of scores in a sample that are independent and free to vary
n-1=df

How well did you know this?

1

Not at all

2

3

4

5

Perfectly