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| Pregunta | Respuesta |
| standard deviation | Sx=Sx2 square rooted |
| slope / b value | NΣXY -ΣXΣY /(NΣX2-(ΣX)2)(NΣY2-(ΣY)2) division part square rooted |
| slope / b value | NΣXY -(ΣX)(ΣY) /(NΣX2-(ΣX)2 |
| intercept / a value | a=Y - bX |
| regression | Y =bX+ a |
| z score | z=X-u/o |
| f test | SS total =Σx2 -(Σx)2 / N SS group = nΣ(Xj-X...)2 SS error = SS total - SS group dftotal=N-1..dfgroup=k-1.. dferror=k(n-1) MSgroup=SStotal/dfgroup MSerror=SSerror/dferror F=MSgroup/MSerror |
| chisquare | df =(R-1)(C-1) |
| midpoint of class interval | RLL +(RUL- RLL) /2 |
| Percentile Rank | % below+ score-RLL/class interv (interv%) |
| Score of p | RLL+PR-%below /interv% (interv width) |
| Mode | Mo= most frequent occurring score |
| Median location | N+1 /2 |
| Mean/ Average | X=ΣX/N Y=ΣY/N |
| Range | highest score - lowest score |
| Variance | Sx2= (Σx2 -(Σx)2 /N /(N - 1) |
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