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Biostatistics for the Clinician

Biostatistics for the Clinician

University of Texas-Houston
Health Science Center

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Instructions
Please enter both your name & social security number first below to be sure you get credit (before doing anything else). Then enter the best answer to each of the 15 pretest questions that follow by clicking its button. After responding to all questions, follow instructions at the end to submit your responses for pretest research participation credit.
NAME:
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Biostatistics for the Clinician

Biostatistics for the Clinician
Pretest Question 1:	What is main reason clinicians need to know some biostatistics? No Response Computation of medical research results Evaluation of medical research results Design of medical research studies Prediction of patient outcomes None of the above

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Biostatistics for the Clinician
Pretest Question 2:	Small relationships among variables produce large: No Response Residuals Power Correlations Effect sizes None of the above

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Biostatistics for the Clinician
Pretest Question 3:	To detect smaller treatment effects requires: No Response Reduced alpha Reduced power Increased variability Reduced beta None of the above

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Biostatistics for the Clinician
Pretest Question 4:	In medical research biostatistics a "False Positive" or "False Alarm" is an intuitive way to describe a: No Response Type I error Type II error Standard error Sampling error None of the above

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Biostatistics for the Clinician
Pretest Question 5:	Being able to evaluate whether a medical researcher has chosen appropriate statistical methods depends upon knowing the: No Response Types of residuals Types of variables Types of errors Types of parameters None of the above

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Biostatistics for the Clinician
Pretest Question 6:	Which of the following uses an ordinal measure? No Response Blood type (A, B, etc.) Cancer stage (I, II, etc.) Temperature Weight None of the above

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Biostatistics for the Clinician
Pretest Question 7:	The optimal amount of statistical power is: No Response .05 .20 .80 .95 None of the above

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Biostatistics for the Clinician
Pretest Question 8:	The value in the middle of a distribution is the: No Response Mean Median Mode Average None of the above

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Biostatistics for the Clinician
Pretest Question 9:	The value occuring most often in a distribution is the: No Response Mean Median Mode Average None of the above

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Biostatistics for the Clinician
Pretest Question 10:	Approximately what proportion of the values in a Gaussian distribution lies within 1 standard deviation of the mean? No Response 3/4 2/3 1/3 1/4 None of the above

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Biostatistics for the Clinician
Pretest Question 11:	A rule of thumb in multivariable medical research studies is to make sure you have: No Response At least the same number of subjects as predictor variables At least twice as many subjects as predictor variables At least five times as many subjects as predictor variables At least ten times as many subjects as predictor variables None of the above

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Biostatistics for the Clinician
Pretest Question 12:	The z-score is measured in: No Response Semi-interquartile ranges Standard errors Standard deviations Interquartile ranges None of the above

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Biostatistics for the Clinician
Pretest Question 13:	The standard deviation of the z-scores is: No Response 1 0 68% 2/3 None of the above

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Biostatistics for the Clinician
Pretest Question 14:	The box in a box plot contains what portion of the data? No Response All 3/4 1/2 1/4 None of the above

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Biostatistics for the Clinician
Pretest Question 15:	Quantitative variables need to have which kind of distribution to be able to apply inferential statistical analyses in clinical situations. No Response Normal Binomial Poisson Chi-square None of the above

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Final Instructions

After answering all 15 questions above, press the "Submit... " button below for pretest research participation credit. Then verify submission to be sure you get credit. After you press "Submit..." it is possible Netscape may tell you it is unable to connect because of unusually high system demands. If so, wait a moment and resubmit. Finally, press the "HOME..." button below to correctly complete your session and terminate the pretest. End Pretest

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