Statıstıcs Iı Final 4. Deneme Sınavı

Toplam 20 Soru
PAYLAŞ:

1.Soru

A teacher has created a simple linear regression model for a problem with two variables. The total variation in the model is partitioned as follows: SST = SSR+SSE = 780+ 320 What is the value of the coefficient of determination in this problem?


0.24 

0.29

0.32

0.78

0.71


2.Soru

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


32.56

38.98

30.83

45.12

65.78


3.Soru

If the degrees of freedom is 10 and right tale area is 0.10, what is the chi-squrae value from the chi-square table?


15.987

14.684

17.275

17.535

16.750


4.Soru

If the correlation coefficient is 0.25  then what is the value of the coefficient of determination ?


0.25

0,025

0,0025

0,625

0,0625


5.Soru

In Pearson's Correlation Coefficient, which of the following is represented by the letter r ?


Population correlation

Sample correlation

Dependent variable

Independent variable

Continuous variable 


6.Soru

After the coefficient of determination is calculated, the research says " the independent variable in this problem explains the 36% of the variability of the dependent variable. If we consider the total variability of dependent variable as 100%, it means that there is still 64% of unaccounted variability for the dependent variable. There must be some other effects on the variability of the dependent variable.". 

According to this explanation, what is the coefficient of determination calculated by the researcher? 


0,06

0,08

0,36

0,64

1,00


7.Soru

Some countries and their populations are given below :  Austria:8.751.820 France:65.233.271 Italy: 59.290.969 Spain: 46.397.452 What is the index number for France when compared to Spain?


140.60

127.79

100.00

22.18

18.86


8.Soru

What is the coefficient of determination if te value of the correlation coefficient is -0.65?


-0.9025

-0.4525

0

0.4225

0.8525


9.Soru

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


60

70

80

90

100


10.Soru

Interval estimation : the limits of the confidence interval are (49.6, 50.4), the significance level is 0.01. What is the sample arithmetic mean?


49.8

49.0

50.0

50.1

50.2


11.Soru

What is the method of finding the degree of relationship between the variables called?


Regression analysis

Correlation analysis

Independent analysis

Dependent analysis

Degree analysis


12.Soru

According to which criterion a decision maker choose that course of action which minimizes the minimum possible pay – offs?


Minimax

Maximin

Maximax

Minimin

Optimum


13.Soru

Price of X is 10, and 8 units on January, and April, respectively. January is the base period. What is the fixed based simple price index for April?


800

200

125

80

20


14.Soru

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?


maximax

minimin

Maximin

Max

probabilistic


15.Soru

A road traffic safety research study examined winter tire use in the passenger cars in two nearby cities. Number of the cars examined in city 1 are 100 (n1 ) and 60 of the cars have winter tires. On the other hand, in the city 2,120 (n2 ) passenger cars are examined and 78 of the cars have winter tires. What is the alternate hypothesis?


H1 : p1 = p2

H1 : p1 ≠ p2

H1 : p1 < p2

H1 : p1 > p2

H0 : p1 = p2


16.Soru

Total price and quantity for products group A is 4 and 15, and 5 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?


21.5

140 / 9

64.0

80.0

50.0


17.Soru

The price of a product in the base period is 150 TL and the price of the same product in the current period is 200, what is the simple index for price in the current period?


180.65

180.54

150.25

125.50

133.33


18.Soru

What is the rejection region if the alternative hypothesis is in the form of H1 : µ1 < µ2 ?


z > zα

z < – zα

z > z

z > α

z > -α


19.Soru

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


The sign test

z test

t test

MANOVA

F test


20.Soru

When the Laspeyres quantity index is calculated, the price is the weight in the ____ period.

Which of the following completes the sentence best?


next

current

base

every

previous