The following transformation was made on 79 values of a variable w. u=w-54.5/6. statistics computed from u were u bar = 6.8, variance of u = 1.8. find w bar and variance of w. u =w-54.5/6. statistics computed mean of u as 6.8 and variance as 1.8. find mean of w and variance of w

solution:

If U=W-(54.5/6) then W=U+(54.5/6).

Assuming a one-for-one transformation, the mean for W is found by adding all the W data together then dividing by 79.

That is, Wbar=(w1+w2+w3+...+w79)/79.

But w1=u1+54.5/6, w2=u2+54.5/6, etc.

So Wbar=(u1+u2+...+u79)/79+(79×54.5/6)/79=Ubar+54.5/6=6.8+54.5/6=15.8833 approx.

The variance is unaffected by the transformation since variance is simply the spread of the data which doesn’t change.

Wbar=Ubar=1.8.

spinning a 1, 2, or 3. option d.

step-by-step explanation: when spinning a number graph up to 4, and aiming for any number less than 3, that automatically eliminates the number 4. now you have two numbers to spin on that are less than 3, but the number 3 is included in this question because it's no greater of an number than itself. i hope this you : )