What would the scatter plot show for data that produce a Pearson correlation of r = +.88?
a. points clustered close to a line that slopes up to the right
b. points clustered close to a line that slopes down to the right
c. points widely scattered around a line that slopes up to the right
d. points widely scattered around a line that slopes down to the right
The most commonly used descriptive statistics for a set of numerical scores are the mean and the ____.
a. range
b. standard deviation
c. mode
d. median
If there are two books by the same single author, in what order should they appear in the reference list?
a. in the order they are cited in the body of the text
b. in chronological order by date of publication
c. in alphabet order according to the title
d. in order of importance
When you read an eye chart at the optometrist, your _____________ is being determined.
a. scotopic vision
b. photopic vision
c. static visual acuity
d. dynamic visual acuity
Visual acuity is often measured by presenting a letter often called a Landolt
a. B.
b. C.
c. O.
d. L.
Where is a score of X = 45 located in a distribution with a mean of 40 and a standard deviation of 12?
a. slightly above average
b. far above average
c. slightly below average
d. far below average
Under what circumstances should the publication year be included with the citation in the body of the text?
a. always
b. never
c. the first time the citation occurs
d. only if necessary to distinguish it from other references
Your ability to perceive detail in moving objects is defined as
a. dynamic visual acuity.
b. static visual acuity.
c. photopic vision.
d. scotopic vision.
The concept of degrees of freedom is associated with the ____.
a. mean for a sample
b. mean for a population
c. variance for a sample
d. variance for a population
Under what circumstances should the last name of only the first author of a six or more author reference, followed by et al.. be included with the citation in the body of the text?
a. always
b. never
c. the first time the citation occurs
d. the second and subsequent times the reference is cited
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