Question

The response time in milliseconds for 5 different type of circuits in automatic value shutoff mechanism is measured and reported as follows

           

            Circuit 1    Circuit 2       Circuits 3        Circuits 4           Circuit 5

            28                    25                    31                    31                    29

            25                    31                    25                    25                    31

            28                    30                    31                    25                    23

            25                    22                    23                    31                    28

            29                    27                    38                    21                    24

            35                    29                    29                    31                    19

            31                    29                    28                    30                    25

                                    23                    29                    23                    27

                                    35                    34                    22 25

24. 24    22       31

29                    25

39

Test the hypothesis that all 5 circuits have same response time. Use alfa=.05. Use Scheffe’s methods for multiple comparison, if needed.by spss programme

Answer 1

Using Spss:

First Enter Data:

For this type of problem use One Way ANOVA:

Steps: Analyze-->Compare Means-->One Way ANOVA:

Then Click on Post Hoc.

Then tick on Scheffe.

output:

Here p value is greater than 0.05, so there is no significant difference between in five circuit.

Now see in Post Hoc Sceffe:

Here all pvalue is greater than 0.05, it is means all circuit are same response time.