https://www.skillsyouneed.com/num/percent-change.html
(Answer included in imagine)
Answer:
$7
Step-by-step explanation:
10-3=7
A plot of residuals (vertical deviations from the regression line) shows the errors or lack of fit, so it would indicate a good fit if the residuals are small, vs. over fit if they are large. Due to age related growth short pre teen, and a plateau after age 21, I would expect a linear regression would offer estimate age 5.5 years.
True, the biggest factor will be 4 :)