SOLUTION: DATA TABLE : https://imagizer.imageshack.com/img923/3653/Su1KFx.jpg Disk drives have been getting larger. Their capacity is now often given in terabytes​ (TB) where 1TB=1000

Algebra ->  Finance -> SOLUTION: DATA TABLE : https://imagizer.imageshack.com/img923/3653/Su1KFx.jpg Disk drives have been getting larger. Their capacity is now often given in terabytes​ (TB) where 1TB=1000       Log On


   

Question 1196645: DATA TABLE : https://imagizer.imageshack.com/img923/3653/Su1KFx.jpg
Disk drives have been getting larger. Their capacity is now often given in terabytes​ (TB) where 1TB=1000 ​gigabytes, or about a trillion bytes. A search of prices for external disk drives on a large shopping website in a recent year found the accompanying data. The data are known to have a​ strong, positive,​ gently-curved pattern with no outliers.
Find the slope​ estimate b1, While either technology or the formula can be used to find the slope​ estimate
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
the straight line equation is y = m * x + b
m is the slope
b is the y-intercept.
using the linear regression calculator at http://www.alcula.com/calculators/statistics/linear-regression/#gsc.tab=0, i get:
y=142.07216104119 * x - 295.7303368135
the slope is 142.0721610119.
round to 2 decimal places to get:
y = 142.07 * x - 295.73
when x = 32, y = 142.07 * 32 - 295.73 = 4250.51
it's not exactly 4459, but it's close.
results from the calculator are shown below.

the x-values in the equation are the capabity in terrabytes.
th y-values in the equation are the price.