Deneme Sınavı Soruları

20 soru
Cevap anahtarı açık: çöz, sonucunu gör

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1
The payoff values for decision alternatives : there are 5 states of nature and the profit values for the first decision alternative are 66, 27, 104, 91, 87. The decision maker is pessimistic. Which payoff value is taken from the first decision alternative?
2

The table shows s the times (in minutes) spent by five students revising for a test and the grades that they achieved in the test. What is Spearman’s rank correlation coefficient?
3
I. H1 : The first population is shifted to the right of the second population
II. H1 : The first population is shifted to the left of the second population
III. H1 : The first and the second populations are shifted from each other

Which of the above is the correct alternative hypothesis sentence for Wilcoxon Rank Sum Test?
4
............ is used to decide whether k independent samples are drawn from different populations. It is an extension of the Wilcoxon sum rank test to a comparison of more than two populations. It assumes that the variable under consideration is measured on at least ordinal scale.

Which of the following test should be written the gap above.
5

In decision making, _____________ are the outcomes on which the decision maker has little or no control.
6
Which of the following represents the sum of the explained variation and unexplained variation?
7
Some countries and their populations are given below : Austria:8.751.820 France:65.233.271 Italy: 59.290.969 Spain: 46.397.452 What is the index number for France when compared to Spain?
8
In an index, base value is 50 and today's value is 200, what is the simple index number for today's value?
9
Monthly sales of companies X and Y are 45 units and 72 units, respectively. What is the index for X compared to Y?
10
If there is a positive perfect correlation between two variables, what is the value of the correlation coefficient?
11

Which of the followings measures the proportion of the variance of dependent variable (y), given by independent variable (x), when y is expressed as a linear regression on x in correlation and regression problems?
12

A ________________ index number is constructed to show the changes when there are a number of different items collected together?
13
Which of the following is not true about the multiple linear regression model?
14
Population of statistics students is 500, population of statistics 201 course is 150 (40 are repeating only this), population of statistics 203 course is 160 (55 are repeating only this), population of statistics 305 course is 140 (35 are repeating only this). How many people are there in the target population for a survey about repeating 2nd year courses?
15
Interval estimation : the limits of the confidence interval are (397, 555), the significance level is 0.05. What is the sample arithmetic mean?
16
Interval estimation problem : the population standard deviation is not known, the sample standard deviation is 36, there are 9 observations in the sample. What is the value of the standard error to calculate the confidence interval?
17
In an F test, if between sum of squares is 48 and the degrees of freedom is 8, what is the between mean squares?
18
What is the female proportion of a sample with 30 males from a group of 120 students?
19
In which sampling methods the sample includes the individiuals which are ready and availiable?
20
In which of the following sampling methods subgroups occur naturally (such as departments of a company)?

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