Statistics

Question 1

Descriptive Statistics

Answer 1

The concern of descriptive stats is to organize, describe, quantify and summarize a collection of actual observations.

Question 2

Inferential Statistics

Answer 2

Researchers generalize beyond actual observation. They make inferences from the sample involved in the research.

Question 3

Frequency Distribution

Answer 3

its a representation on of how often each value occurs

Question 4

Mean

Answer 4

this the arithmetic average of the statistical data

Question 5

Median

Answer 5

The Middle Value when observations are ordered.

Question 6

Mode

Answer 6

This is the number that occurs most frequent.

Question 7

What the difference between Mean, Median and Mode ?

Answer 7

see cards 4,5,6

Question 8

Bimodal

Answer 8

The data that has 2 modes are bimodal

Question 9

Range

Answer 9

the smallest number in the distribution subtracted from the largest number.

Question 10

Standard Diviation

Answer 10

This measures the DISTANCE of the score from the mean

Question 11

Variance

Answer 11

This the Square of the standard deviation

Question 12

Percentile

Answer 12

if you know how many STD away from the mean the score is then you can determine the percentile

Question 13

Z-score

Answer 13

indicates the number of STDs your score is away from the mean

To determine the z-score subtract the mean distribution from your score and divide the difference by the STD

negative z-scores fall below the mean
Positive Z-scores fall above the mean

Question 14

Normal distribution

Answer 14

Scores that fall within 68% and 98% they are within 1 and 2 STDs

Question 15

Correlational Coefficient

Answer 15

The relationship that 2 or more variables has effect on its association by each other.

Question 16

Positive Correlation

Answer 16

this means that the change in the value tends to be associated with change of another variable in the same direction.

Question 17

Negative Correlation

Answer 17

this means that the change in the value tends to be associated with change of another variable in the OPPOSITE direction.

Question 18

scatter plot

Answer 18

The graphical representation of correlated data .

Question 19

Factor analysis

Answer 19

Review With TUTOR.

Question 20

Significants test

Answer 20

This is a tool that researchers use to tell the significance of the test in trying to disprove different hypothesis

Question 21

Research Hypothesis/Alternative Hypothesis

Answer 21

This is supported by the DATA showing that other possibilities exist.

Question 22

Null Hypothesis

Answer 22

This is DATA inconsistent with the data collected

Question 23

Statistical Signifiants

Answer 23

When the NULL HYPOTHESIS is REJECTED this is where we can say that the test significant

Question 24

Alpha Level

Answer 24

.01 and .05 Review with TUTOR