Flashcards in Chapter 3 Part 2 Deck (14):

1

## The___ is the average of the squares of the distance each value is from the mean.

### population variance

2

## The population variance is the ___.

### squares of the distance each value is from the mean.

3

## The____ is the square root of the variance.

### population standard deviation

4

## The population standard deviation is the____.

### square root of the variance

5

## A ____for a value is obtained by subtracting the mean from the value and dividing the result by the standard deviation.

### z score or standard score

6

## A z score or standard score for a value is obtained by _____.

### subtracting the mean from the value and dividing the result by the standard deviation

7

## ______ divide the data set into 100 equal groups

### Percentiles

8

## Percentiles are?

### divide the data set into 100 equal groups

9

##
_____ divide the distribution into four equal groups, denoted by Q1, Q2, Q3.

### Quartiles

10

## The___ is the difference between the third and first quartiles. IQR Q3 Q1

### interquartile range

11

## The interquartile range (IQR)

### is the difference between the third and first quartiles\

12

## A data set should be checked for extremely high or extremely low values. These values are called ___

### Outliers

13

## Ouliers are?

### checked for extremely high or extremely low values

14