# Topic One: Mean, Variance, and Standard Deviation

Feb 3rd, 2012
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Identify the sampling technique being used. Every 20th patient that comes into the emergency room is given a satisfaction survey upon their discharge.

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Name:Date:Topic One: Mean, Variance, and Standard DeviatioPlease type your answer in the cell beside the question.Please type you answer in the cell beside the question.1. Identify the sampling technique being used. Every 20th patient that coemergency room is given a satisfaction survey upon their discharge.a. random samplingb. cluster samplingc. systematic samplingd. stratified samplinge. none of the above2. The formula for finding the sample mean is _________________.a. = b. =c. =d. = /e. None of the above3. The formula for finding sample standard deviation is _____________a. = 2 2b. =2c. 2 = 22d. =12e. none of the above4. The computation form for sample variance is ___________________a. 2 = 22a.b. 2 = 2 2c. = 2d. =e. none of the above5. The following is the heart rate for 10 randomly selected patients on thmean, variance, and standard deviation of the data using the descriptivethe data analysis toolpak.75, 80, 62, 97, 107, 59, 76, 83, 84, 696. The following is a frequency distribution fo the number of times patiena days time. X is the number of times the call light is used and f is the frnumber of patients). Create a histogram of the data.Xf11111f+2475726131

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