Statıstıcs II (ENG)
Deneme Sınavı Soruları
- 20 soru
- Cevap anahtarı açık: çöz, sonucunu gör
- 1
_______________ tests are used to determine whether a data set comes from a particular distribution
- 2
The payoff values for decision alternatives : there are 5 states of nature and minimum payoff values for 5 decision alternatives are I) 11.650, II) 10.025, III) 5.275, IV) 2.725, V) 3.450. The decision maker is pessimistic. Which decision alternative is choosen?
- 3
According to a correlation relationship between two variables, if the coefficient of determination is 0.50, which of the following represents the meaning of this value?
- 4
Which of the following is not true about the simple linear regression model
- 5
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?
- 6
Decision maker defines the coefficient of optimism as 0.26 , then what is the coefficient of pessimism?
- 7
..................... 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?
- 8
The payoff values for decision alternatives : there are 5 states of nature and the cost values for the first decision alternative are -0.8, -0.9, -0.2, -0.7, -0.6. The decision maker is pessimistic. Which payoff value is taken from the first decision alternative?
- 9
In a simple linear regression model, the arithmetic mean of the independent variable is 60, arithmetic mean of the dependent variable is 140, and b=1.25. What is the value of "a" for this simple linear regression model?
- 10
if there are k independent variables in multiple linear regression, how many dependent variable we could have?
- 11
What is the expected monetary value of this profit based payoff matrix?
- 12
Total price and quantity for products group A is 4 and 50, and 6 and 24, as unit a and unit b, for years X and Y, respectively. What is the Fisher’s price index for A for year Y when year X is the base ?
- 13
If the assumptions of certain tests can not be satisfied what do we need to use for testing?
- 14
Which one of the following statements is true about the statistical decision for question 9?
- 15
In interval estimation, a ___________ is given for the value of a population parameter?
- 16
What is a value that defines the characteristic of a whole population called?
- 17
In stratified sampling method, the target population is divided into homogenous subgroups which are called _________________ ?
- 18
The population variances for two samples are 2 and 5, the difference of the sample means for these two samples is 3, and the sample sizes are 100 and 500, respectively. For the given values what is the test statistic?
- 19
Sample values for a continuous variable (weather temperature in a day ; as oC) : 10, 16, 20, and 28. What is the point estimate of the population arithmetic mean?
- 20
Which sampling method relies on naturally occurring group of units in the population?