o study the effect of temperature on yield in a chemical process, five batches were produced at each of three temperature levels. The results follow.
Temperature |
||||
50°C | 60°C | 70°C | ||
32 | 33 | 29 | ||
22 | 34 | 34 | ||
34 | 37 | 34 | ||
37 | 26 | 36 | ||
30 | 30 | 37 |
Source of Variation | Sum of Squares | Degrees of Freedom | Mean Square | F | p-value |
Treatments | |||||
Error | |||||
Total |
We can directly use here one way anova by Excel.
Step1 ) Enter data in Excel.
Step 2) Data >>Data analysis >> One way anova >>Select data >>click on label in first row >>ok
P value is greater than .10
P value is 0.5680 > 0.05
Therefore,we fail to reject H0.
We do not have enough evidence to reject the null hypothesis that the population mean temperature level are all equal.
ANOVA | ||||||
Source of Variation | SS | df | MS | F | P-value | F crit |
Between Groups | 23.33 | 2 | 11.67 | 0.59 | 0.5680 | 3.89 |
Within Groups | 236 | 12 | 19.67 | |||
Total | 259.33 | 14 |
Get Answers For Free
Most questions answered within 1 hours.