I already have answers I just want to see the work of how it is done! Use the in
ID: 3175738 • Letter: I
Question
I already have answers I just want to see the work of how it is done!
Use the information given in the paragraph below to answer the next five questions. The ITDS department wants to see if the section in which a student takes a particular course makes a difference on the grade received in the course. The data is taken from the class rolls and is a numeric grade from 0 to 100 for each student in each section. The single factor ANOVA follows. anova: Single Factor SUMMARY Groups Count Average Variance Section 1 20 1589 79.450 205.734 Section 2 20 1530 76.500 223.211 Section 3 20 48 74.400 239.516 Section 4 20 463 73.150 337.818 Section 5 20 1399 69.950 361.418 ANOVA value F crit Source of Variation Between Groups 1017.140 254.285 0.450 2.467 Within Groups 25986.250 95 27003.390 99 Total TUKEY MULTIPI LE COMPARISON TEST Critical Q Distance Alpha 3.92 4.497 0.05 Means joined by a double line are not significantly different. Section 4 Section 3 Section 2 Section 1 Section 5 69.950 73.150 74.400 76.500 79.450Explanation / Answer
9) F cal =(MSB)/MSE
where MSE =25986.25/95 =273.54
F cal =254.285/273.54 =0.929
10) SSW=25986.25
11) Tukey critical distance =3.92
13)
F cal= 1.69 <3.92, we do not reject the Ho.
Hence all sections seem to give same grades
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.