Chapter 14-17 Flashcards
When you have more than one factor, what type of ANOVA should be used?
Factorial ANOVA
Results from an ANOVA are placed in what type of table?
Source Table
The effect of one factor is called the _____________.
Main Effect
When analysis of data reveals differential effects of one factor across levels of another factor, what is this called?
Interaction Effect
The number of main effects is equal to:
the number of independent variables
You would want to use a factorial ANOVA if you had:
two independent variables
What type of ANOVA is used when there is only one type of treatment or grouping factor with more than two levels?
One-way
In a source table, the p-value is located in the
Sig column
In the following main effect: F(1,9) = 1.67, p = .229, what is 1.67?
Obtained value
When plotted on a graph, if the lines representing the effects of two variables cross, you have:
Interaction effect
The correlation coefficient is a measure of __________.
Association
Measures which occur at the same time are known as what type of measures?
Concurrent
What does the statement rxy ≠ 0 represent?
Research Hypothesis
Which of the following is another use for correlation coefficients?
estimating reliability
Which of the following Greek symbols is used to represent the population estimate for a correlation coefficient?
ρ
While you can use the correlation coefficient as its own test statistic, what is the other appropriate test statistic often used to examine the significance of a correlation?
T-test
If you posit a relationship between two variables as specifically being either positive only or negative only, what type of test should you use?
One tailed test
Measures which occur over a period of time are known as what type?
longitudinal
The degrees of freedom for using the correlation coefficient is equal to
n-2
What is the name of the Greek letter ρ?
Rho
What is another name for a regression line?
Line of best fit
What is the distance between each data point and the regression line called?
Error of Estimate
Based on the formula for a regression line, what does b represent?
slope of a line
Based on the formula for a regression line, what does a represent?
y intercept
How is the symbol Y’ interpreted?
Y prime
Which of the following determines the direction of the regression line?
slope
In regression, the criterion variable is also known as the
dependent variable
When using two predictor variables, these variables should be
independent
A regression equation can be visually represented on a
Scatterplot
If the correlation between X and Y is equal to -1.0, what do we know about the prediction of Y by X?
It’s perfect
Which of the following is the Greek symbol chi?
X
Statistics that are not governed by the parameters of the population are referred to as ___________ statistics.
nonparametric
Which of the following is the most commonly used nonparametric test?
chi-square
A one-sample chi-square is also known as ________.
goodness of fit test
Which of the following nonparametric tests is used to determine if the number of occurrences across categories is random?
chi-square
The Chi-Square statistic can be interpreted as a test of
differences between observed and expected frequencies
The data used for a chi-square test must be
frequencies
mutually exclusive
A two-sample chi-square is also known as ________.
test of independence
Nonparametric statistics are known as _______________.
distribution-free statistics
In order to meet the sample assumption associated with parametric statistics, what is the minimum of participants you need?
30
