PSYC 100g Lecture Notes - Lecture 4: Blood Pressure
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4 review, p. 74: #1 10 all, but omit 7a. Since the average is the balance point, it would need to move to the right to hold up the tail. That means that the average would be larger than the median. Right now, the average would probably be less than the median. However, as time goes on, and those who lived through the depression die, the median and the average will probably get closer and closer together. In (ii), the median would more or less equal the average. In (iii), the median would be less than the average: the sd of histogram (iii) is around 15; +/- 5 doesn"t hold enough area, +/- 50 is too much, false. Histogram (i) and (iii) are almost mirror images, so they would have similar sd"s: a) omit, the interval 57 kg to 75 kg could be c 66 kg +/- 9 kg, which is the average +/- 1 sd.
