Research

Question 1

Correlational study

Answer 1

looks for linear relationship between variables

Question 2

Longitudinal study

Answer 2

looks at variables over time

Question 3

Prospective study

Answer 3

looks at variable, which is believed to lead to specific outcome

Question 4

Quantitative study

Answer 4

looks at numerical data/results

Question 5

Hypothesis

Answer 5

probable outcome to a study. objective is to test hypothesis.

Question 6

Null hypothesis

Answer 6

no relationship exists amongst variables being tested. research tries to reject the null hypothesis.

Question 7

Dependent variable

Answer 7

variable outcome; what is being measured

Question 8

Independent variable

Answer 8

variables believed to affect the dependent variable; what is being manipulated

Question 9

Random Sample

Answer 9

drawn from entire population; equal chance of being chosen

Question 10

Stratified random sample

Answer 10

large group broken down into subgroups and then subject selected randomly from subgroups

Question 11

Cluster sampling

Answer 11

samples larger group then a specific subgroup

Question 12

Standard deviation

Answer 12

amount a value deviates in relation to the mean or average; normal distribution = bell curve

Question 13

Degrees of freedom

Answer 13

n-1; n= number in a sample

Question 14

significance level

Answer 14

disprove null hypothesis; indicates a found correlation or relationship that didn’t occur because of chance

Question 15

chi-square test

Answer 15

used to prove relationship between two variables

Question 16

T-test

Answer 16

shows how far a statistic deviates from the mean and whether differences between means of groups are significant