Flashcards in Chapter 2 Deck (14):

1

## Frequency distribution

### Number of cases observed at each score value

2

## Relative frequency distribution

### Proportion (like a percentage) of each scores frequency

3

## Class interval

### Segment of the measurement score that has more than one possible score value (such as a A containing marks between 80-100)

4

## Cumulative frequency distribution

### The entry for a score value/class interval is the sum of the frequencies for that value plus the frequencies of all lower score values. It's the total number of frequencies. Frequency of the lowest value + second lowest = second lowests' cumulative frequency

5

## Cumulative relative frequency distribution

### The values cumulative frequency divided by the total number of cases

6

## Stated limits

### Highest and lowest score values in an interval

7

## Minimum size of class interval

### Range ÷ max # of class intervals from table 2.7

8

## Upper/lower real limit

### .5 subtracted from the lowest #, and .5 added to the highest #

9

## Size of a class interval

### Upper real limit - lower real limit

10

## Midpoint of a class interval

### Middle of an interval's real limits. (0.5 * interval size) + lower real limit

11

## Central tendency

### A typical, representive score (often the highest point on a bell curve)

12

## Variability

### The extent in which a score deviates from the central tendency

13

## Skewness

### Scores being bunched to one side of the central tendency

14