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Statistics > Chapter 14-17 > Flashcards

Chapter 14-17 Flashcards

1
Q

When you have more than one factor, what type of ANOVA should be used?

A

Factorial ANOVA

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2
Q

Results from an ANOVA are placed in what type of table?

A

Source Table

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3
Q

The effect of one factor is called the _____________.

A

Main Effect

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4
Q

When analysis of data reveals differential effects of one factor across levels of another factor, what is this called?

A

Interaction Effect

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5
Q

The number of main effects is equal to:

A

the number of independent variables

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6
Q

You would want to use a factorial ANOVA if you had:

A

two independent variables

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7
Q

What type of ANOVA is used when there is only one type of treatment or grouping factor with more than two levels?

A

One-way

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8
Q

In a source table, the p-value is located in the

A

Sig column

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9
Q

In the following main effect: F(1,9) = 1.67, p = .229, what is 1.67?

A

Obtained value

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10
Q

When plotted on a graph, if the lines representing the effects of two variables cross, you have:

A

Interaction effect

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11
Q

The correlation coefficient is a measure of __________.

A

Association

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12
Q

Measures which occur at the same time are known as what type of measures?

A

Concurrent

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13
Q

What does the statement rxy ≠ 0 represent?

A

Research Hypothesis

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14
Q

Which of the following is another use for correlation coefficients?

A

estimating reliability

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15
Q

Which of the following Greek symbols is used to represent the population estimate for a correlation coefficient?

A

ρ

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16
Q

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?

A

T-test

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17
Q

If you posit a relationship between two variables as specifically being either positive only or negative only, what type of test should you use?

A

One tailed test

18
Q

Measures which occur over a period of time are known as what type?

A

longitudinal

19
Q

The degrees of freedom for using the correlation coefficient is equal to

A

n-2

20
Q

What is the name of the Greek letter ρ?

A

Rho

21
Q

What is another name for a regression line?

A

Line of best fit

22
Q

What is the distance between each data point and the regression line called?

A

Error of Estimate

23
Q

Based on the formula for a regression line, what does b represent?

A

slope of a line

24
Q

Based on the formula for a regression line, what does a represent?

A

y intercept

25
Q

How is the symbol Y’ interpreted?

A

Y prime

26
Q

Which of the following determines the direction of the regression line?

A

slope

27
Q

In regression, the criterion variable is also known as the

A

dependent variable

28
Q

When using two predictor variables, these variables should be

A

independent

29
Q

A regression equation can be visually represented on a

A

Scatterplot

30
Q

If the correlation between X and Y is equal to -1.0, what do we know about the prediction of Y by X?

A

It’s perfect

31
Q

Which of the following is the Greek symbol chi?

A

X

32
Q

Statistics that are not governed by the parameters of the population are referred to as ___________ statistics.

A

nonparametric

33
Q

Which of the following is the most commonly used nonparametric test?

A

chi-square

34
Q

A one-sample chi-square is also known as ________.

A

goodness of fit test

35
Q

Which of the following nonparametric tests is used to determine if the number of occurrences across categories is random?

A

chi-square

36
Q

The Chi-Square statistic can be interpreted as a test of

A

differences between observed and expected frequencies

37
Q

The data used for a chi-square test must be

A

frequencies
mutually exclusive

38
Q

A two-sample chi-square is also known as ________.

A

test of independence

39
Q

Nonparametric statistics are known as _______________.

A

distribution-free statistics

40
Q

In order to meet the sample assumption associated with parametric statistics, what is the minimum of participants you need?

A

30

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