# Module 4 Sample Standard Deviation Statistical Reasoning Worksheet

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2) A nurse studied PSA readings and found the sample data set to be normally distributed with a mean of 42 and a standard deviation of 7.25. What is the median of this distribution? (Hint: this question has to do with knowing the characteristics of a normal distribution and where the mean, mode, and median lie in relation to one another in such a distribution. Check out the “Skewed and Normal Distributions” document under the Module 4 Instruction Materials.) 3) The following 9 questions (Q3 to Q11) are primarily conceptual questions based on Modules 3 and 4 In a negatively skewed distribution, Alisha scored the mean, Ken scored the median, and Catherine scored the mode. Who had the highest score? Alisha Ken Catherine All three scored approximately the same 4 In a normal distribution, Alisha scored the mean, Ken scored the median, and Catherine

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