Exam answers Flashcards
What is the first requirement for making effective decisions?
relevant information
Students of human performance are most concerned with which domain of objective measurements?
psychomotor
If a college instructor alters the distribution of his or her students’ midterm exam grades because the class did not do as well as last year’s class, with what type of standards is the instructor most concerned?
norm-referenced
What are the two types of evaluation?
formative and summative
Which of the following does NOT belong with the other three?
- range
- mean
- standard deviation
- variance
mean
Which of the following statistics reflects the most heterogeneous distribution?
- standard deviation of 6
- standard deviation of 5
- variance of 2
- variance of 3
If a data set includes values that are all close in range with the exception of one value, which is much larger than all the others, what is the best measure to describe the distribution?
median
What is another name for the z-score table?
normal curve table
Which statistic requires the data to be ranked before their calculation?
median
What describes a distribution around a given mean with a standard deviation that is mesokurtic but no skewness is present?
The correlation between test A and test B is .34. The correlation between test A and test C is .68. Which of the following statements is correct?
The relationship between tests A and C is higher than that between tests A and B.
Which of the following describes the general relationship between the SEE and the coefficient of determination?
They are inversely (negatively) related.
The correlation between academic success rate and time spent watching television is -.73. Which of the following statements is most likely true?
Which of the following is NOT an expression of the amount of inaccuracy of a regression equation?
Y-intercept
How well does a test of athletic ability with a .12 correlation with batting average for baseball players predict batting success?
not very well
Skinfolds are often used in multiple regression equations to estimate body fatness. What does multiple regression equation refer to?
More than one predictor variable is used
What is the most stable measure of central tendency with interval data?
mean
Which of the following is the simplest test to use when only two groups are tested on one occasion?
t-test for independent groups
An aerobics instructor is teaching two classes, one in aerobic dance and one in circuit weight training. The instructor wants to know if the proportion of males to females is the same in each class. What is the correct statistical technique to use to determine this?
chi-square
What does the significance level (alpha level) protect against doing falsely?
Which of the following statements about dependent variables is true?
They are measured
Which of the following is an alternative term for the independent variable?
treatment variable
When H0 is rejected, which significance level (or alpha level) would result in the greatest chance of a type I error?
0.01
0.10
0.001
0.25
0.25
What does the significance level (alpha level) protect against doing falsely?
rejecting the null hypothesis
Which of the following statistics is a measure of the amount of variance accounted for between two variables?
R^2
Which of the following relationships would likely have the strongest relationship?
height and weight
Which of the following does NOT represent a nominal scale of measurement?
height
How would we describe a distribution that has many more high scores than low scores?
negatively skewed
