Statıstıcs Iı Final 7. Deneme Sınavı

Toplam 20 Soru
PAYLAŞ:

1.Soru

A fisherman thinks that the depth of the sea is effective on the amount of specific fish caught (kilogram) on a given day. The fisherman sets the fishing net in to different areas for the last ten days and records the amount of fish caught  and the depth of the sea  where the fishing net was set. A friend of the fisherman has calculated the Pearson’s correlation coefficient as 0.75.

In the example above, what is the dependent variable?


The depth of the sea

The area where the net is set 

The amount of the fish caught

The friend of the fisherman

The duration (last ten days)


2.Soru

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?


The Chi-square Goodness of Fit Test

The Kolmogorov- Smirnov Test

Kruskal-Wallis Test

Wilcoxon Signed Rank Test

Wilcoxon Rank Sum Test


3.Soru

In decision making, where do we show all the possible decision alternatives of the problem, all the states of nature and the payoff values for each of alternative and states of nature combination?


ANOVA table

t table

Identitiy matrix

Payoff matrix

Mode and median


4.Soru

The payoff values for decision alternatives : there are 5 states of nature and the cost value for the first decision alternative is 6 according to optimist and 5 according to pessimist. If coefficient of oprimism is 0.2, what is payoff value for the first decision alternative?


5.75

5.60

5.45

5.20

5.15


5.Soru

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?


Hurwicz's

Wald's

Plunger's

Shorrock's

Tucker's


6.Soru

The payoff values for decision alternatives : there are 5 states of nature and the profit values for the first decision alternative are 96, 87, 45, 14, 107. The decision maker is optimistic. Which payoff value is taken from the first decision alternative?


14

45

87

96

107


7.Soru

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


State of natüre

Nature of state

Payoff

Decision alternative

Payroll


8.Soru

In a binomial test, x =35, n= 60 and P=0.55, what is the observed/calculated z value?


0.154

0.389

0.657

0.796

0.872


9.Soru

The payoff values for decision alternatives : there are 5 states of nature and the profit values for the first decision alternative are 69, 78, 54, 40, 87. The decision maker is optimistic. Which payoff value is taken from the first decision alternative?


87

78

69

54

40


10.Soru

Total price for products group A is 27 and 24 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?


112.5

100 / 9

100 / 19

19

25


11.Soru

The following linear regression model is cretaed between two variables

If the expected value of the dependent variable is 120, what is the value of the independent variable according to this linear regression model?


21.56

12.45

35.85

81.93

110.25


12.Soru

The payoff values for decision alternatives : there are 5 states of nature and minimum payoff values for 5 decision alternatives are I) 1.150, II) 1.025, III) 1.275, IV) 1.725, V) 1.450. The decision maker is pessimistic. Which decision alternative is choosen?


I

II

III

IV

V


13.Soru

the following regression model is created between two variables:

if the value of independent variable is 12, what is the expected value of the dependent variable according to given regression model?


60

89

120

140

152


14.Soru

What is the chain-based simple index for Dean according to table?


150

80

110

90

100


15.Soru

The payoff values for decision alternatives : there are 5 states of nature and the profit values for the first decision alternative are 6, 7, 4, 9, 8. The decision maker is pessimistic. Which payoff value is taken from the first decision alternative?


4

6

7

8

9


16.Soru

The payoff values for decision alternatives : there are 5 states of nature and the cost value for the first decision alternative is 5 according to optimist and 6 according to pessimist. If coefficient of oprimism is 0.4, what is payoff value for the first decision alternative?


5.20

5.40

5.60

5.75

5.80


17.Soru

What is the chain-based simple index for Duke according to table?


15.8

112.87

120.78

82.45

77.78


18.Soru

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?


102.0

25.5

400.0

240.0

170.5


19.Soru

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? 


0.1258

0.6578

0.3125

0.4545

0.1595


20.Soru

Using the graph, what is the Pearsons correlation between these two variables?


0

-1

0.5

1

0.2