(1 pts) The F statistic used in an ANOVA study is the ration of withintreatment
ID: 2955373 • Letter: #
Question
- (1 pts)
The F statistic used in an ANOVA study is
the ration of withintreatment variance to total variance
the ratio of betweentreatment variance to total variance.
the ratio of betweentreatment variance to within treatment variance.
- (1 pts)
Mean square is obtained by
multiplying sum of squaresby sample size.
multiplying sum of squaresby degrees of freedom.
dividing sum of squares bysample size.
dividing sum of squares bydegrees of freedom.
- (1 pts)
Sum of squares within + sum of squares between = total sum ofsquares in a one-way ANOVA.
TRUE
FALSE
- (1 pts)
ANOVA degrees of freedom are additive.
TRUE
FALSE
- (1 pts)
Which is not an assumption of the ANOVA procedure?
Samples are selectedrandomly and independently from their respectivepopulations.
All p populationprobability distributions are normal.
The p population variancesare equal.
Between treatment variationequals within treatment variation.
- (1 pts)
Another term for within variation is error.
TRUE
FALSE
- (1 pts)
Treatment variation is another term for between groupvariation.
TRUE
FALSE
Explanation / Answer
Numberof obs = 52 R-squared = 0.5729
Root MSE =29.9222 Adj R-squared= 0.5462
Source | Partial SS df MS F Prob > F
-----------+----------------------------------------------------
Model| 57636.3654 3 19212.1218 21.46 0.0000
|
treatmnt| 57636.3654 3 19212.1218 21.46 0.0000
|
Residual| 42976.3077 48 895.339744
-----------+----------------------------------------------------
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