Chapter 3.2, Problem 23AYU

To determine

To calculate: line of best fit for given data

Age of Mother $x$	Incidence of down syndrome $y$
$33$	$2.4$
$34$	$3.1$
$35$	$4$
$36$	$5$
$37$	$6.7$
$38$	$8.3$
$39$	$10$
$40$	$13.3$
$41$	$16.7$
$42$	$22.2$
$43$	$28.6$
$44$	$33.3$
$45$	$50$

Answer to Problem 23AYU

The scatter diagram that shows treating age of the mother as the independent variable is,

  

Scatter plot diagram And The best fit line is $y=3.36x-115.40$ .

Explanation of Solution

Given information:

Age of Mother $x$	Incidence of down syndrome $y$
$33$	$2.4$
$34$	$3.1$
$35$	$4$
$36$	$5$
$37$	$6.7$
$38$	$8.3$
$39$	$10$
$40$	$13.3$
$41$	$16.7$
$42$	$22.2$
$43$	$28.6$
$44$	$33.3$
$45$	$50$

Concept Used:

Scatter Plot.

According to the given details,

Actually, the data represents exponential function so,

The best fit line is $y=3.36x-115.40$

  

Scatter plot diagram