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Name: The director of a shipping company believes that there is a relationsh
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Description: The director of a shipping company believes that there is a relationship between the cost of a customer’s shipment (£) and the weight (lb) of the package being shipped. For investigating this possible relationship, a random sample of nine customer sh

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015

1st Edition

ISBN:9781680331141

Author:HOUGHTON MIFFLIN HARCOURT

Publisher:HOUGHTON MIFFLIN HARCOURT

Chapter11: Data Analysis And Displays

Section11.2: Box-and-whisker Plots

Problem 14E

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The director of a shipping company believes that there is a relationship between the cost of a customer’s shipment (£) and the weight (lb) of the package being shipped. For investigating this possible relationship, a random sample of nine customer shipments was selected and the weight (in lb) and the cost (rounded to the nearest £) for each shipment were recorded. The results obtained are shown in the table below (on the picture).

required:

a) ) The scatter diagram showing the relationship between the cost of a
customer’s shipment (£) and the weight (lb) of the package being shipped, is given below. Comment fully and clearly on this diagram.

ii)

9 / 22
109%
+
田の
-
Scatter Diagram
60
50
40
30
5:20
10
4
10
12
14
16
18
Weight of a package (Ib)
(b)
i.
Show clearly the first two calculations that led to >x² =1,592 and
ΣΥ13,165.
Show that x? #(Ex)*.
ii.
Cost of shipment (£)

Weight of package (Ib)
Cost of shipment (£)
Shipment
(X)
(Y)
1
7
22
12
35
10
26
4
16
45
5
17
51
6
10
7
17
43
8
13
40
9
14
41
The scatter diagram showina the relationshin behaeen the cost of a
32
2.

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