Why would a researcher use the standard deviation instead of the variance to explain the results of a study?
a. The standard deviation is smaller than the variance.
b. The variance is too large a number for easy interpretation.
c. The standard deviation is the same scale as the observed scores.
d. The variance gives only the variability of the mean.
c
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Who first published the mathematical model known as chi square?
a. The Taiwanese-American economist Lixia Chi b. The American scientist, Frank Wilcoxon c. The British geneticist, Karl Pearson d. The British agriculture scientist, Ronald Fisher
Researchers use this method to summarize the data collected based on the sample in a particular research study which includes calculating the measures of central tendency.
a. descriptive statistics b. inferential statistics c. nonparametric statistics d. regression statistics
A major problem with observing group work by participants is
a. Lack of improvement goals b. Lack of engagement in group work c. Lack of objectivity d. Trivial, meaningless feedback
__________ communication may occur within a group
a. Explicit b. Implicit c. Verbal d. All of the above.