Statistics for Psychology

This assignment has 4 questions.1. (a) Describe and explain the difference between the mean, median, and mode. (b) Make up and example (not in the book or the lectures) in which the median would be the preferred measure of central tendency.2. (a) Describe the variance and standard deviation. (b) Explain why the standard deviation is more often used as a descriptive statistics than the variance.3. For the following score, find the (a) mean, (b) median, (c) sum of squared deviations, (d) variance, and (e) standard deviation:211 232 004 503 114 401 4404. A developmental psychologist studies the number of words that seven infants have learned at a particular age. The numbers are 10, 12, 8, 0, 3, 40, 18. Figure the (a) mean, (b) median, and (c) standard deviation for the number of words learned by these seven infants. (d) Explain what you have done and what the results mean to a person who has never taken a statistics course.

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