Statistical Analysis and Interpretation of Data: Central Tendency, Variability, Correlation, and Distributions

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Statistical Analysis and Interpretation of Data: Central Tendency, Variability, Correlation, and Distributions 1. Which of the following are measures of central tendency? Select all that apply a. mean b. median c. mode d. Variance e. standard deviation f. linear transformation 2. Which of the following are measures of variability? Select all that apply a. mean b. median c. mode d. variance e. standard deviation f. linear transformation 3. Rachael and Peter are discussing how the mean value and variance affect the distribution graph. As the following graph shows, there are two distributions: A and B Peter said that the distribution A has fatter tail because its has bigger standard deviation than the distribution B. Rachael's answer is different:she thinks the distribution A has a smaller standard deviation than the distribution B. Who do you think is right? a. Peter b. Rachael c. None of them are right. Distribution A and Distrib ution B have the same standard d eviation 4. In a bell - shaped distribution, changing ___can make the distribution flatter (i.e. more compressed); and changing ___ can shift the distribution to the left or to the right. a. Variance, mean
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