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Q.45

Expert-verified
Found in: Page 718

Introductory Statistics

Book edition OER 2018
Author(s) Barbara Illowsky, Susan Dean
Pages 902 pages
ISBN 9781938168208

Does the line seem to fit the data? Why or why not?

It is not a right decision to fit linear line in the data, because from the graph there is an increase in year $2002$, the number of AIDS cases diagnosed decreased year by year

See the step by step solution

Step 1: Given information

Given in the question that a 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 Total 802,118 489,093

Step 2: Explanation

From the graph, it can conclude that there is an increase in AIDS cases diagnosed until $1993$ . After that, from year $1993$ through year $2002$, the number of AIDS cases diagnosed decreased year by year. It is not a right decision to fit linear line in the data.