Reliable but not always Valid
Chi Squared?
I have a tendency to be central.
I like me some variability.
Third variables are a crowd.
100
In this measure of internal consistency, each item on a scale should correlate with the sum of the other items.
What is item-total correlation?
100
The scale of measurement on which variables must be measured in order to do a chi square test.
What is nominal?
100
The measure of central tendency that is always in the data set.
What is the mode?
100
What the sum of squares measure?
What is the average squared deviation from a distribution's mean?
100
Correlation does not equal this.
What is causation?
200
The type of validity you reported on in your project 3 papers.
What is face validity?
200
This term represents the column or row totals in a contingency table.
What is marginal frequencies?
200
A disadvantage of the mean.
What is affected by outliers? What is value might not exist in the data set?
200
if the SS = 100 and N = 11, then the unbiased (sample) variance = _____.
What is 10?
200
This value represents the strength of the linear relationship between X and Y.
What is correlation coefficient?
300
Types of validity illustrated by the following example: empathy correlates with friendliness, but not with shyness.
What are convergent and divergent (or discriminant) validity?
300
The alternative hypothesis for a chi-square test.
What is the two variables are related in the population?
300
The median of the following data set: 6 4 5 4 8 3
What is 4.5? 3 4 4 5 6 8
300
Definition of biased statistic.
What is when the average across a sample statistic under or over-estimates the population parameter?
300
This is the amount of variability not accounted for by the relationship between X and Y.
What is coefficient of nondetermination or (1 - r-squared).
400
Lab experiments are high in this type of validity and low in this type of validity.
What is internal?
400
What phi coefficient and Cramer's V specifically measure. Note. "Strength of the effect is not the answer."
What is the proportion of variability in one variable (category) associated with a second variability (category)?
400
If I divide each score in my data set by 5, then how does that affect my mean?
What is divide the mean by 5?
400
How is the range computed differently for continuous versus discrete data?
What is subtract the URL - LRL versus highest - lowest values in your data set?
400
This term measures the amount of error we would expect if the null hypothesis is true when predicting Y from X.
What is standard error of the estimate?
500
Reliability expressed as an equation.
What is Reliability = true score / true score + measurement error score where true score + measurement error score = observed score
500
The test you perform when you only have one categorical variable.
What is the goodness-of-fit test?
500
The distribution shape when my Mean > Median > Mode and when the data are "peaked." (two answers - must get both responses correct)
What is positively skewed and leptokurtic?
500
Why is it "better" to use the computational formula for computing Sum of Squares over the definitional formula?
What is because the definitional formula may require you to round when taking the mean from each score in the data set, contributing to rounding error.
500
The approach used to minimize the total squared error between predicted Y and actual Y.
What is least squares approach?
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