EP STAT.F/PSYCHOLOGY-MYLAB W/ETEXT
EP STAT.F/PSYCHOLOGY-MYLAB W/ETEXT
6th Edition
ISBN: 9780205847112
Author: Aron
Publisher: PEARSON CO
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Chapter 1, Problem 2PP

a.

To determine

Identify the level of measurement for the ethnic group to which a person belongs.

b.

To determine

Identify the level of measurement for the number of times a mouse makes a wrong turn in a laboratory maze.

c.

To determine

Identify the level of measurement for the position a runner finishes in a race.

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II Consider the following data matrix X: X1 X2 0.5 0.4 0.2 0.5 0.5 0.5 10.3 10 10.1 10.4 10.1 10.5 What will the resulting clusters be when using the k-Means method with k = 2. In your own words, explain why this result is indeed expected, i.e. why this clustering minimises the ESS map.
why the answer is 3 and 10?
PS 9 Two films are shown on screen A and screen B at a cinema each evening. The numbers of people viewing the films on 12 consecutive evenings are shown in the back-to-back stem-and-leaf diagram. Screen A (12) Screen B (12) 8 037 34 7 6 4 0 534 74 1645678 92 71689 Key: 116|4 represents 61 viewers for A and 64 viewers for B A second stem-and-leaf diagram (with rows of the same width as the previous diagram) is drawn showing the total number of people viewing films at the cinema on each of these 12 evenings. Find the least and greatest possible number of rows that this second diagram could have. TIP On the evening when 30 people viewed films on screen A, there could have been as few as 37 or as many as 79 people viewing films on screen B.

Chapter 1 Solutions

EP STAT.F/PSYCHOLOGY-MYLAB W/ETEXT

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