Statıstıcs II (ENG)
Deneme Sınavı Soruları
- 20 soru
- Cevap anahtarı açık: çöz, sonucunu gör
- 1
Price of X is 3, 4, and 2 units on March, April, and May, respectively. What is the chain-based simple price index for April?
- 2
The payoff values for decision alternatives : there are 5 states of nature and maximum payoff values for 5 decision alternatives are I) 0.15, II) 0.11, III) 0.72, IV) 0.27, V) 0.34. The decision maker is pessimistic. Which decision alternative is choosen?
- 3
Which of the following statements is not true regarding making a decision?
- 4
In a sign test the median is 17 and here are the observations in the sample: 5, 6, 3, 6, 9, 7, 8, 9, 6, 15, 18, 19, 20, 24 What is the n- value for the sign test?
- 5
Total price and quantity for products group A is 14 and 5, and 25 and 4, as unit a and unit b, for months X and Y, respectively. What is the Laspeyres' price index for A for month X when month Y is the base?
- 6
..................... is a measure of association for ranked data. In addition, it can be used when the relation between two variables is not linear.
Which of the following test is described above?
- 7
Total price for products group A is 20 and 18 units for weeks X and Y, respectively. What is the fixed based simple average price index for A for week X when week Y is the base?
- 8
The manager of a company has looked at the monthly average sales of a product for the last ten years and created the table below :
Choosing January as a base; what is the the simple index number for April?
- 9
Which of the followings happen if the payoff matrix is based on costs?
- 10
Which of the following consequences most probably occurs if the probability values are obtained from an outside firm?
- 11
Which one of the following values cannot be calculated for Spearman's rank correlation coefficient?
- 12
In which of the following decision making environment, the decision maker can list all the states of nature that are possible in the decision problem but cannot assign any probability value to the specific state of nature that might happen?
- 13
It is based on the agreement between the distribution of a set of observed values and some particular theoretical distribution. This one sample test determines whether the scores in the sample come from a population with theoretical distribution.
Which of the following tests is described above?
- 14
In which reason of sampling we consider "Some populations are uncountable or infinite to conduct a census"?
- 15
Which of the following is correct about the sampling process?
- 16
A researcher wants to conduct a survey on the mathematics scores of the Turkish students in Turkey. Which of the following can not belong to the sample choosen for this survey?
- 17
A researcher wants to decide whether the average Statistics 101 course exam scores of students of faculty of engineering and faculty of natural sciences are same or not. He takes 60 students from faculty of engineering whose average exam score is 59, and 50 students from faculty of natural sciences whose average score is 65. The variance regarding the exam scores for engineering faculty is 15, and that for natural sciences faculty is 10. What will be the z-statistics for this comparison?
- 18
What is the sample proportion of a sample with frequency (f) 450 and sample size (n) 9000?
- 19
For two-sided test on one population hypothesis testing with α = 0.05 and n = 15, what is the degrees of freedom?
- 20
Consider a sample of five firms from a population of 20 firms. If the sampling procedure gives each combination an equal probability, how many different samples are there?