GOV.WALES uses cookies which are essential for the site to work. Non-essential cookies are also used to tailor and improve services. By continuing to use this site, you agree to our use of cookies.
Definition: a. the difference between the mean of a set of observations and one particular observation b. the difference between the numerical value of one particular observation and the theoretical result
Definition: The residual is the difference between actual achievement and the average or ‘expected’ achievement. A positive residual indicates that achievement exceeds the model expectation, whereas a negative residual indicates that achievement is lower than the model expected level.
Notes: Talfyriad yw “FSM” o’r geiriau Saesneg “free school meals”.