00:01
Here we are given x bar is equal to 294 by 11 which is to 26 .7272 and y bar equal to 227 by 11 which is 20 .6 .66.
00:16
Now we have to find ss66 which is summation x square minus summation x the whole square by n which is 9398 minus 294 the whole square divided by 11 upon simplification.
00:30
We will get the answer for this as 1540 .182.
00:36
The next one, s .s .y, which is summation y, minus summation by n, which is 6273, minus 227 the whole square divided by 11, which is 1540.
00:51
0 .1588 .5455.
00:59
Then third one, s .s.
01:01
Xy, which is summation xy minus summation y, summation by n, which is 7465 minus 294 multiplied by 227 divided by 11, which is 1397.
01:15
199, which is 1397 .909.
01:20
Then slope b1 is equal to s s xy divided by s s x x which is equal to 1397 .909 divided by 1540 .182 which is 0 .97 .766.
01:42
Now the intercept a equal to y bar minus b1 x bar which is equal to 20 .6363 minus 0 .0 .0.
01:54
0 .9076 multiplied by 26 .7272, which is equal to minus 3 .6 double 2.
02:08
Hence the correct answer for the first 41 question is option 1...