Question

How do you calculate the standard error of the estimate against a single data point. i.e. at age 13

Answer 1

Standard Error ofestimate is given by:

,

where

   is the standard error of estimate,

Y_i is the actual score of i^th data

is the predicted score of i^th data

N is the number of pairs of scores.

For a single data point, i.e., at age 13,

we have N = 1.

Substituting, we get:

     

Thus, for a single data point,;

where

Y =actual score

= predicted score