Statistics for People Who (Think They) Hate Statistics, Salkind, Without CD
5th Edition
ISBN: 9781452277714
Author: Neil J. Salkind
Publisher: SAGE Publications, Inc
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Question
Chapter 17, Problem 1TP
To determine
To explain: The case when obtained chi-square value is zero with an example.
Expert Solution & Answer
Answer to Problem 1TP
The value of chi square will be zero if the expected frequency becomes equal to the obtained frequency.
Explanation of Solution
When a first year student completed his mathematics exam and expecting that will get 90% score. If the student scored 90% in his mathematics exams, in this situation expected frequency will be equal to the obtained frequency. The value of chi square will be zero in this case.
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Worksheet 10
Jesse runs a small business selling and delivering mealie meal to the spaza shops.
He charges a fixed rate of R80, 00 for delivery and then R15, 50 for each packet of
mealle meal he delivers. The table below helps him to calculate what to charge
his customers.
10
20
30
40
50
Packets of mealie
meal (m)
Total costs in Rands
80
235
390
545
700
855
(c)
10.1.
Define the following terms:
10.1.1. Independent Variables
10.1.2. Dependent Variables
10.2.
10.3.
10.4.
10.5.
Determine the independent and dependent variables.
Are the variables in this scenario discrete or continuous values? Explain
What shape do you expect the graph to be? Why?
Draw a graph on the graph provided to represent the information in the
table above.
TOTAL COST OF PACKETS OF MEALIE MEAL
900
800
700
600
COST (R)
500
400
300
200
100
0
10
20
30
40
60
NUMBER OF PACKETS OF MEALIE MEAL
Chapter 17 Solutions
Statistics for People Who (Think They) Hate Statistics, Salkind, Without CD
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