Discuss the advantages and disadvantages of using visual inspection of graphs rather than statistics to evaluate the significance of the results
What will be an ideal response?
The disadvantage of visual inspection is that it is subjective. There are no absolute, objective guidelines to define what is significant and what is not. The advantage of visual inspection is that a treatment must have a very clear and convincing effect that is easy to see in a graph.
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Given the following ordered pairs, the correlation is 8 7 7 6 3 2 1 2 1 2 a. positive
b. negative. c. zero. d. perfect.
Grouping people with intellectual disability into categories of intermittent, limited, extensive, and pervasive is based upon
a. IQ scores. b. how much help they need in daily living. c. interaction skills. d. prognosis and diagnosis.
Psychologists are limited in the conclusions that can be drawn from case studies because case studies
a. lack cultural relativity. b. are subject to the Barnum effect. c. lack formal control groups. d. tend to create negative correlations.
A scale of measurement in which the units of measurement between the numbers on the scale are all equal in size is a _____ scale
a. nominal b. ordinal c. interval d. ratio