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Chapter 12: Q.44 (page 718)

Hand draw a smooth curve on the graph that shows the flow of the data.

Short Answer

Expert verified

The scatter plot is shown below:

Step by step solution

01

Given information

Given in the question that the table,

Year
# flu cases diagnosed
# flu deaths
Pre-1981
91
29
1981
319
121
1982
1,170
453
1983
3,076
1,482
1984
6,240
3,466
1985
11,776

6,878
1986
19,032
11,987
1987
28,564
16,162
1988
35,447
20,868
1989
42,674
27,591
1990
48,634
31,335
1991
59,660
36,560
1992

78,530		41,055
1993
78,834

44,730
1994

71,874
49,095
1995
68,505
49,456
1996
59,347
38,510
1997
47,149
20,736
1998
38,393
19,005
1999
25,174
18,454
2000
25,522
17,347
2001
25,643
17,402
2002
26,464
16,371
Total802,118
489,093
02

Explanation

Use MS excel to plot the data. Follow the steps shown below:

1. Enter data in excel worksheet as shown below:

2. Select data of variable "Year" and "Number of AIDS cases diagnosed" and go to "Insert" menu.

3. Click on "scatter plot". The graph will appear.

The scatter plot is shown below:

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Most popular questions from this chapter

Table contains real data for the first two decades of flu cases reporting

Year# flu cases diagnosed# flu deathsPre-19819129198131912119821,17045319833,0761,48219846,2403,466198511,7766,878198619,03211,987198728,56416,162198835,44720,868198942,67427,591199048,63431,335199159,66036,560199278,53041,055199378,83444,730199471,87449,095199568,50549,456199659,34738,510199747,14920,736199838,39319,005199925,17418,454200025,52217,347200125,64317,402200226,46416,371Total802,118489,093

Find the correlation coefficient

correlation=______

Use the following information to answer the next five exercises. A random sample of ten professional athletes produced the following data where xis the number of endorsements the player has and yis the amount of money made (in millions of dollars).

xyxy
02512
3849
2739
1303
513410

What is the slope of the line of best fit? What does it represent?

Use the following information to answer the next five exercises. A random sample of ten professional athletes produced the following data where xis the number of endorsements the player has and is the amount of money made (in millions of dollars)

Use regression to find the equation for the line of best fit.

64. What is the process through which we can calculate a line that goes through a scatter plot with a linear pattern?

63. If there are 15 data points in a set of data, what is the number of degree of freedom?
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