STATISTICAL

By neatly photographing the questions you will write with your own handwriting (below) must be read) or as a picture file (jpg, gif, png) by scanning You install it. The first two questions are 35 points, the third and the 4 questions are 15 points, successes.

Question 1 XXX Bank located in certain regions of Turkey having accounts in some branches To test whether there is a difference between regions and branches in terms of credit risk rates of customers In order to analyze variance, five percent significance level was evaluated and obtained. variance analysis table is presented below. Answer the following questions accordingly.

Variation Source	Freedom degree	squares Total	squares Average	F Value	Severity Level
general	999	xxx	xxx
region	4	xxx	xxx	xxx	0,026
branch	4	xxx	xxx	xxx	0,010
The interaction	16	xxx	xxx	xxx	0,058
error	975	xxx	xxx

A-) The credit risk ratios of XXX Bank customers vary by region and branch.

Construct the H0 and H1 hypotheses for each major effect of not showing.

B-) Since the data set used is balanced (subgroup observation numbers are equal), how many regions and how many

The branch was used and how many customers' data were evaluated?

C- Is there any difference between regions and / or branches in terms of credit risk averages of customers?

D- What is the interaction effect? How should it be interpreted according to the level of importance achieved in the study?

E- What is the name of the test that is the nonparametric equivalent of this hypothesis test?

Question 2. Write the correct equivalents of the letters A, B, C, D and E in the text below.

XXX Bank located in seven regions of Turkey's total 3658 customers having accounts in 136 branches

In order to test whether there is a difference between regions and branches in terms of credit risk rates,

Firstly Levene test was applied and the test statistics (significance level) was found as 0.023. According to this

variances A: (homogeneous / non-homogeneous). Then, Kolmogorov Smirnov test was applied and this test

The significance level was found to be 0.067. Accordingly data B: (shows normal distribution / normal

does not show distribution). Accordingly, suitable for testing hypotheses, C: parametric / nonparametric

The name of the hypothesis test is D: ................. If there is a difference in terms of branches and regions,

The general name of the tests that allows us to know which branch or region they originate from is E: .......... Note: all tests The significance level for is five percent.

Question 3: As a surveillance officer attached to the police, you have bought the X oven in the Meltem neighborhood

The arithmetic average of 47 bread is 238 g, and the arithmetic average of 76 bread is 246 g.

It was found. How to make sure that the bread in both bakeries is equal to the standard bread weight (250g)

You set? Besides, how can the bread weights of both ovens differ from each other?

You set? (Which tests do you need to do when doing these procedures?).

Question 4: What do multiple comparison tests do? Which are these? Parametric and nonparametric hypothesis

Explain in what ways they are used after the tests.