A researcher is attempting to decide whether to hire a statistician to assist with the statistical aspects of the study. If the researcher cannot perform which of the following for a quantitative study, a statistician should be contacted?
(Select all that apply.)
a. Provide sample demographics using descriptive statistics.
b. Perform reliability testing of the study instruments.
c. Design and perform analyses to answer research questions and test hypotheses.
d. Design and perform an exploratory analysis of the data.
e. Hand-compute all statistical calculations.
f. Prepare the data for analysis.
g. Perform a power analysis.
h. Interpret the results obtained by all statistical computations.
ANS: A, B, C, D, F, G, H
To perform statistical analysis of data from a quantitative study, one must be able to (1) determine the necessary sample size to adequately power your study, (2) prepare the data for analysis, (3) describe the sample, (4) test the reliability of measures used in the study, (5) perform exploratory analyses of the data, (6) perform analyses guided by the study objectives, questions, or hypotheses, and (7) interpret the results of statistical procedures. If the researcher is not able to do all of these, a statistician is consulted. Descriptions of the sample demographics are made statistically.
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