A cognitive psychologist was interested in the ability of men and women to multi

Question

A cognitive psychologist was interested in the ability of men and women to multitask - a cognitive skill thought to engage short-term or working memory. The psychologist observed a A sample of 5 men (n = 5) and 8 women (n = 8) and measured the number of tasks they could accurately complete within a short time frame. He found that men completed 2.3 tasks on aver- age (M = 3), whereas women completed 4.5 tasks on average (M = 4.5). What is the weighted 25 mean for both samples? 21, Based on the scale of measurement for each variable listed below, which measure of central tendency is most appropriate for describing the 26. data? (a) The time (in years) it takes a sample of students to graduate college 27. (b) The blood type (e.g., Type A, B, AB, O) of a group of participants (c) The rankings of college undergraduate academic programs

Explanation / Answer

20) Weighted mean = (no of men x Mean for men + no of women x mean for women)/total no of samples

= (5x2.3 + 8x4.5)/(5+8)

= 3.65

21) (a) Mean

(b) Mode

(c) Median

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