Deneme Sınavı Soruları

In which decision making criterion  The decision maker tries to minimize the damage since the overall approach is to look for the best among the worst payoff values?

Which index is known as the average of weighted relative prices since it is a composite index number of prices formed by the weighted sum method?

Total price and quantity for products group A is 34 and 3, and 80 and 5, as unit a and unit b, for years X and Y, respectively. What is the Fisher’s price index for A for year X when year Y is the base?

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?

Which of the following represents the sum of the explained variation and unexplained variation?

In a Chi-square goodness of fit test, the observed value is 85, the expected value of the same observation is 80, what is the contribution of these values to overall chi-square value? 

In a correlation investigation, if we don't consider the two variables and we are dealing with two different population, which statistical term is come up?

What is the name of the nonparametric test that is used for the hypothesis test about the population median?

In decision making, for each combination of decision alternative and state of nature, a ____________ value is calculated?

For Ahmet going work by either bus or his own car are examples of .......

Assume that there are two different brands (A and B) producing chocolates. The variance of chocolates are assumed to be different. One chooses 10 chococaltes of brand A and 20 chocolates of brand B and observes that the average weight of brand A sample is 56 gr and brand B is 54 gr. The sample variances for A and B are 1 and 2 gr respectively. What will be the t-statistic and can we conclude that the weights of these brands are different at 0.05 significance level?

I. Choose the level of significance α.

II. Determine the population proportion under study and form the null hypothesis (H0 ) and the alternative hypothesis (H1 ).

III. Identify the critical points and critical region for the hypothesis test.

IV. Calculate the test statistic z for proportions.

V. Based on sample information decide to reject or fail to reject the null hypothesis (H0 ) and interpret the results of the hypothesis test.

What is correct order of the steps of hypothesis testing given above?

A reseacher wants to analyse the consumption behaviors of people in a city. He divides the population into 4 groups: male/female and young/old. Then he estimates the proportion of each group in population and constructs the samples accordingly. So, which sampling method does he uses?

A researcher wants to conduct a survey to determine the infertility rate in females over 30 years of age living in Turkey. Which of the following is the true target population for this research?

A person makes an estimation about population parameter and gives a range for the value of the parameter. What kind of estimation procedure is followed in this situation?

I. Rejecting the null hypothesis in an ANOVA test means at least one of the means of the
population under consideration is different from the other population means. 

II. To compare two means through hypothesis testing procedure which is called one-way analysis of variance (one-way ANOVA) technique used to compare the means of two populations. 

III.  Rejecting the alternative hypothesis in an ANOVA test means at least one of the means of the population under consideration is different from the other population means. 

Which of the given statements about ANOVA test can said to be true?

If a researcher fails to reject the null hypothesis (H₀) and the H₀ is false what can be said?