Terms
Symbols
Correlation
Null or Research Hypothesis?
Random
100

What a sample and population?

A sample is a subset of a population. A population is all of the occurrences with a certain characteristic.

100

What is n?

Sample Size

100

What type of relationship is .5 to 1.0?

Strong relationship

100

No relationship between variables.

Null

100

What is the median of this data set?

2, 4, 5, 7, 8

5

200
Explain Nominal, Ordinal, and Interval/Ratio.

Nominal - Categories/levels, NO RANK/words OR #’s, case ID #, inmate #, phone #, dichotomous/dummy (Gender; Race, Ethnicity)

Ordinal-Categories, RANKABLE/can be words/numeric ranges (-10,000\$ - 20,000\$, -20,001\$ - 30,000\$), “plz select the following that best matches your age ‘18-30, 30-50’”

Interval/Ratio - Know the actual number, “I make 50,000\$”

200

What is N?

Population size

200

What type of relationship is 0 to .1?

Weak or no relationship

200

Refers to the sample.

Research.
200

What are the three most common measures of variability?

Range, Standard deviation and Variance.

300

What is Mode, Median, Mean?

Mode is the most frequently occurring value.

The median is defined as the midpoint in a set of scores. It’s the point at which ½,/50%, of the scores fall above, & ½,/50%, fall below.

Mean is the middle point in a set of values

300

What is s?

Standard Deviation

300

What type of relationship is .4?

Moderate to strong relationship.

300

Written using Roman symbols.

Research.

300

What is the mode of this data set?

1, 3, 5, 3, 4, 3

3

400

What is Research and Null Hypotheses?

Null hypotheses refer to populations and are written in Greek symbols.

Research hypotheses refer to samples and are written in Roman symbols.

400

What is X?

Each individual score.

400

What type of relationship is .3?

Moderate relationship

400

Written using Greek symbols.

Null.

400

What is a Bivariate correlation?

Two variables.

500

Explain Descriptive Statistics and Inferential Statistics.

Descriptive Statistics: Used to organize and describe the characteristics of a particular data set.

Inferential Statistics: Used to make inferences based on a smaller group of representative data.

500

What is M?

Mean.

500

What type of relationship is .2?

Weak to moderate relationship.

500

Implied hypothesis.

Null.

500

What are the 5 steps to a hypothesis test?

1. What are the research and null hypotheses?

2. What are the assumptions (x, y, level of measurement, assumption of distribution?)

3. What test(s) will you be using?

4. What is the computed value(s)? What is the critical value(s)? What is the significance level (.05)?

5. What do your results mean?