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Q. Part 1, What is the appropriate analysis study logistic regression Q. Part 2,

ID: 3066137 • Letter: Q

Question

Q. Part 1, What is the appropriate analysis study

logistic regression

Q. Part 2,what is the mean turbidity of each site (A to J)?

Q. Part 3, What is the value for the mean sum of squares of the residuals?

Q. part 4, is the data

right skewed

site turbidity A 43 A 28 A 43 A 28 A 42 A 43 A 40 A 35 A 42 A 43 B 25 B 28 B 28 B 25 B 25 B 25 B 26 B 25 B 23 B 25 C 23 C 24 C 30 C 32 C 25 C 28 C 23 C 25 C 26 C 27 D 32 D 32 D 32 D 33 D 32 D 29 D 26 D 38 D 27 D 29 E 17 E 21 E 18 E 17 E 25 E 17 E 18 E 14 E 15 E 15 F 23 F 21 F 17 F 18 F 19 F 24 F 14 F 17 F 17 F 18 G 14 G 18 G 14 G 16 G 14 G 9 G 14 G 26 G 10 G 15 H 13 H 26 H 18 H 15 H 15 H 14 H 17 H 15 H 11 H 14 I 15 I 15 I 14 I 12 I 17 I 19 I 15 I 14 I 16 I 14 J 13 J 15 J 14 J 13 J 16 J 19 J 16 J 15 J 11 J 15

Explanation / Answer

1. ANOVA is the appropriate analysis study.

2.   site Mean
A 38.70
B 25.500
C 26.300
D 31.00
E 17.70
F 18.800
G 15.00
H 15.80
I 15.100
J 14.700

3. 12.7 is the required mean sum of squares of the residuals. (Using Minitab)

4. If we don't consider the site and plot the raw data in minitab, we can see that the data is slightly positively skewed.