00:01
Hello students, in the question, they given that in a completely randomized design, 12 experimental units were used.
00:12
Used for their first treatment, 15 for their second treatment and 20 for their third treatment and their sum of squares, that is sum of squares or treatments which is ssr is equal to 1100 and the total sum of square that is sum of square for total which is denoted as css is equal to 1500.
01:03
Now we need to find the sum of square of error, sum of square of error which is equal to css minus ssr.
01:18
Now substitute the known values, we get our sse is equal to 1500 minus 1100, we get 400.
01:30
Then the degrees of freedom to be calculated as the size of first treatment n1 is 12, n2 is equal to 15 and n3 is equal to 20.
01:42
So the total n is equal to n1 plus n2 plus n3 which is 12 plus 15 plus 20, we get 47.
01:53
Then the degrees of freedom of treatment which is k minus 1, there are 3 treatments, so it is 2.
02:05
Then the degrees of freedom of error is equal to n minus k which is 47 minus 3 is equal to 44.
02:19
Then the degrees of freedom of total that is 2 plus 44 is equal to 46.
02:28
Now we need to find the sum of square that is mean sum of square.
02:34
Mean square for treatment is equal to ssr divided by the degrees of freedom of treatment...