Deneme Sınavı Soruları

The payoff values for decision alternatives : there are 6 states of nature and the cost values for the first decision alternative are -0.75, -0.85, -0.15, -0.65, -0.55, -0.05. The decision maker is pessimistic. Which payoff value is taken from the first decision alternative?

What are the simple index numbers for this data set (Jane is base period)?

If the Chi-Square goodness of fit test is applied to data in the table, what is the total chi-square value?

In which criterion a level of optimism (alpha) is attained for the maximum value of each action, 1-alpha to minimum value and then a weighted average payoff is calculated?

In a simple linear regression model, if the equation is as follow,

y= 5 + (3.5)x

Which of the following can be accepted as a true expression?

The weather conditions in this decision problem are examples of .....

Ho :The distribution of differences is symmetrical around M_D= 0

Which of the following tests is related to the given null hypothesis?

What is the value of maximax criterion for this profit based payoff matrix?

The price informations for different products regards to the different years are followings:

According to these information, what is the value of the simple aggregate price index for 2020 by using 2017 as the base period?

Answer the following three questions (Q5,Q6 and Q7) according to those information.

The following table contains the exam scores of three different classes.

A mathematics teacher wants to test whether the distribution of exam scores for all classes are identical or not. Which test should be used for that hypothesis testing? (Confidence level= 0.95)

If the proportion of married people in a group is 0.63, what is the proportion of single people in the group?

Y=a + bX

What does b indicates on that regression model?

What is the shaded region indicated by arrows called in hypothesis testing?

The price of a certain electronic product at a chain store is 180 TL. The same electronic product is also available through various online stores and five of the store prices are as follows: 155, 179, 175, 175, 161 TL. 

What is the null hypothesis for the problem given above?

In stratified sampling method, the target population is synthetically divided into homogenous subgroups based on some characteristics. Which of the following is the correct term for these homogeneous subgroups?

For the one-way ANOVA test, the test statistic is the ratio of two variances: namely the variance between _______ and the variance within ________. 

Which option completes the blanks above?

There are two types of incorrect decisions through hypothesis testing. Which of the following describes "type I error"?

Which one of the following is not a probability sampling method?