00:01
Hello everyone so this is the question that we have we have brokerage speed of execution and satisfaction so we have to find x minus y and x squared in the given data so let's jump onto the solution basically the question says that the american association of individual investors have this data want to predict satisfaction satisfaction using speed of execution speed of execution right so let's jump onto the solution so this is going to be if i have to find so we have this as x i'll take this as x i'll take this satisfaction as y so if i find so if i find x minus y so if i take summation of x first so summation of x would be equal to 16 .9 and my summation of y commission of y would be equal to submission of y would be equal to 17 .4 so if i take x minus y so this is going to be x minus y if i draw our table 11 .9 11 .22 11 .22, then 13 .26, then 13 .32, then 9 .2, h.
01:48
And if i draw out the table, x minus x multiplied by x, so x multiplied by x, or x square, you may call it.
01:59
So, this is going to be equal to 11 .56, 10 .8, 9, 11 .5, 6 ,000 .9, 11 .5, 6, 6 .6.
02:08
Again this is going to be 12 .96 and 10 .3.
02:14
So if i take submission of phoenix so this is going to be submission of x multiplied by y, summation of x multiplied by y this is going to be equal to x is just let's say it does just not the first time.
02:32
If it be 8 .98 and this is going to be this is x multiplied by y, right? it's a x, you know, it like by y.
02:43
So i got this.
02:46
So let's jump on in order to find a value.
02:49
So we're going to use the formula of a, which is equal to summation of y, multiplied by summation of x squared minus summation of x multiplied by submission of x y...