Non-parametric test

Problem 1

In the field experiment on the effects of sowing and cutting management on spider numbers, we allocated one of each treatment to each of four blocks, with a block being one side of the field.

Row	Treatment	Spider	Block
1	F1	21	1
2	F1	20	2
3	F1	19	3
4	F1	18	4
5	F2	16	1
6	F2	16	2
7	F2	14	3
8	F2	14	4
9	NF1	18	1
10	NF1	17	2
11	NF1	15	3
12	NF1	16	4
13	NF2	14	1
14	NF2	13	2
15	NF2	13	3
16	NF2	12	4

1. State the hypotheses (H₀& H_a).

2. Perform Friedman's Test in Minitab or SPSS.

3. Screen capture of the process and results in Minitab or SPSS.

4. Interpret results.

5. State the appropriate conclusion.

Problem 2

To remind you, the data are from four treatments (types of vegetation management by sowing and cutting), each replicated four times on plots whose positions were randomly selected around a field margin. The response variable is the number of spiders per plot.

Row	Treatment	Spider
1	F1	21
2	F1	20
3	F1	19
4	F1	18
5	F2	16
6	F2	16
7	F2	14
8	F2	14
9	NF1	18
10	NF1	17
11	NF1	15
12	NF1	16
13	NF2	14
14	NF2	13
15	NF2	13
16	NF2	12

1. State the hypotheses (H₀& H_a).

2. Perform Kruskal-Wallis Test in Minitab or SPSS.

3. Screen capture of the process and results in Minitab or SPSS.

4. Interpret results.

5. State the appropriate conclusion.