Flashcards in Chap 9 T Tests Deck (14):

1

## Categorical (nominal)

### When variables are measured using categories or names.

2

## Continuous ( intervally scaled)

### When variables are measured using numbers along a continuum with equal distances or values, b/w each number along the continuum.

3

## Dependent Variable

### A variable for which the values may depend on the independent on , or differ by, the independent variable. When the dependent variable is statistical related to the independent variable, the value of the dependent variable " depends" on, or is predicted by the value of the independent variable.

4

## Dependent, or paired, samples test test

### A test of statistical similarity b/w the means of two paired, or dependent samples.

5

## Independent Sample t tests

### A test of statistical similarity b/w the means of 2 independent samples on a single variable.

6

## Independent Variable

### A variable that may predict or produce variation in the dependent variable. The independent variable may be nominal or continuous and is sometimes manipulated by the the researcher. ( e.g. when the researcher assigns participants to an experimental of control group, thereby creating a two - category independent variable)

7

## Matched, paired, dependent samples

### When each score from one sample is matched from one score from a second sample. Or in the case of single sampled measured at 2 times, when each score at Time 1 is matched with the score for the same individual at Time 2.

8

## Matched, paired, dependent samples t tests

### Test comparing the means of paired, matched, or dependent samples on a single variable.

9

## Significant

### Shortened for of the expression " statistically significant"

10

## Standard error of the difference b/w the means

### A statistic indicating the standard deviation of the sampling distribution of the difference b/w the means.

11

## t

### The t value = comparing 2 means to see if they are significantly different from each other.

12

## df

### Degrees of freedom

13

## sD

### The standard deviation of the difference b/w 2 dependent, or paired, sample means.

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