A sociologist recorded the estimated life expectancies of women born in Center City. Use the data from women born in 1970 and 2000 to create a linear model that predicts the life expectancy, in years, (y) of a female born in a given year (x).

Year Born Life Expectancy (years)
1960 66.1
1970 67.6
1980 70.1
1990 71.9
2000 74.0
2010 75.9

Which equation represents this linear model?
y = 0.213x – 352.0
y = 0.213x – 358.4
y = 4.695x – 9181.6
y = 4.695x – 9322.4

Question

A sociologist recorded the estimated life expectancies of women born in Center City. Use the data from women born in 1970 and 2000 to create a linear model that predicts the life expectancy, in years, (y) of a female born in a given year (x).

Year Born           Life Expectancy (years)
1960                   66.1
1970                   67.6
1980                   70.1
1990                   71.9
2000                   74.0
2010                   75.9
 
Which equation represents this linear model?
y = 0.213x – 352.0
y = 0.213x – 358.4
y = 4.695x – 9181.6
y = 4.695x – 9322.4

anonymous · Answer

Using a TI-84, go to Stat->Edit and fill in with the information you were given
Then exit, go back to Stat->Calc->LinReg (4)
The equation should appear on your screen

sonyalee77 · Answer

thanx