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Methods quizlet

Terms in this set (47)

A theoretical distribution of scores
Normal bell curve
Has all of the characteristics of interval data and zero is absolute
Ratio data
These reflect differing degrees, amounts or in frequencies and range from some minimum to maximum quantity
continuous data
This research term that describes the ranking of preferences for political candidates
Ordinal
This research term that describes employment status
Discrete data
This is anchored by 2 opposite or bipolar adjectives and asks participants to locate the meaning they ascribe to a stimulus
Semantic differential
This has a response set which must be balanced at the ends of continuum
Likert scale
The selection of participants is random
Probability sampling
Using the individuals who offer to participate in a research stufy
Volunteer sampling
The extent to which conclusions developed from data collected from a population can be extended to sample
Generalizability
Finding additional research participants by asking current participants to get volunteers
Snowball effect
Often uses the responses agree, strongly agree
Likert scale
Responses must be exhaustive, mutually exclusive, and equivalent
Discrete data
The people who complete a survey
Sample size
The amount of usable surveys
Response set
Your subset of the population that has a chance of being chosen
Sampling frame
The probability of any unit being included in the sample is known or equal
Probability sampling
Does not rely on random selection
Non probability
Summary information about data set as a whole
Descriptive statistics
Drawing conclusions about a population by examining data from a sample
Inferential statistics
The statistical test for determining differences between two groups of independent variables
T test (2)
The commonly reported measure of central tendency
Mean
Information about the relationships between or among variables
Inferential statistics
What the letter "p" represents
Chronbachs alpha
What the letter "N" represents
Number
These are measures of central tendancy
Mean, mode and median
3 types of comparison test
Chi square, t- test and ANOVA
The two types of relationship tests
Correlation and regression
The criterion for accepting or rejecting hypothesis based on probability
Significance level
Represented by the letter "f"
Frequency
This statistical test is an extension of the t test
ANOVA
The test you would use to compare two groups
T test
Test you would use if your were comparing the weight loss from 3 different diets
ANOVA
You would use this test if you wanted to see if drunk driving was related to gender
Correlation test
What type of test would you use if you wanted to oredict
Regression
Relies on deductive reasoning
Quantitative research
Achieved when the measurement measured what was intended
Validity
Achieved when participants react similarly to data collection procedures
reliability
Describes the variable the researcher is trying to explain
Dependent variable
Research term that describes the cause of change in other variable
Independent variable
Elements presented in the research question or hypothesis
Variables
The research term that describes the variable that is manipulated
Independent variable
A precise statement indicating the nature and direction of the relationship or difference between the variables
Directional hypothesis
States the nature of the relationship between two or more variables
Hypothesis
States that no relationship or difference exists between variables
Null hypothesis
Questions with one of at least 2 categories of the same variable
Discrete data
Describes the spread of scores and include range and standard deviation
Measures of dispersion
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