Statıstıcs II (ENG)
Deneme Sınavı Soruları
- 20 soru
- Cevap anahtarı açık: çöz, sonucunu gör
- 1
X is 51, Y is 170. What is the simple index number of X compared to Y?
- 2
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?
- 3
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?
- 4
What is the value of minimin criterion for this profit based payoff matrix?
- 5
Decision maker defines the coefficient of optimism as 0.34 , then what is the coefficient of pessimism?
- 6
What might be the correlation coefficient according to that graph?
- 7
In which of the following approaches; decision maker creates the payoff table based on either profit or cost for each combination of decision alternative and state of nature, chooses the maximum or minimum payoff value for each decision alternative, and selects the decision alternative that gives the highest or lowest of these payoffs.
- 8
Which of the followings represents the population correlation for Pearson’s correlation coefficient?
- 9
Which of the following is not true about the simple linear regression model
- 10
In a binomial test, x =35, n= 60 and P=0.55, what is the observed/calculated z value?
- 11
Answer the questions 1-4 according to the following situation.
The weather can be either snowy, rainy or sunny tomorrow morning. Ahmet can go to work either by bus or by his own car. If the weather is sunny and he goes to work by his own car, it will take 10 minutes and if he chooses to go by bus it will take 20 minutes. On the other hand if the weather is rainy his own car will take 15 minutes and the bus will take 25 minutes to go to work. Finally, if the weather is snowy car option takes 20 minutes and bus option takes 35 minutes.
The duration (time) of going to work is an example of ........
- 12
How do you measure the degree of a relationship between two continuous variables?
- 13
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?
- 14
Population of country A is 500.000, population of males is 240.000 (25 % are students), population of females is 260.000 (30 % are students). How many people are there in the target population for a survey to determine sports habits of students?
- 15
I. Quota Sampling
II. Cluster Sampling
III. Stratified SamplingWhich of the above is (or are) considered as non-probability sampling?
- 16
A qualitative survey was conducted to find out how contended 3rd year medical students are with distance learning instead of conventional methods in Europe. 250 students were included in the study from different European countries. Concerning statistical terminology, which of the following matching is true?
- 17
For sample one the sample size is 10, mean is 4.5, and standard deviation is 1. For sample two the sample size is 12, mean is 3.4, and standard deviation is 1.2 and (µ1 −µ2 ) is considered to be equal to 0. What is the test statistics for the given values?
- 18
In a problem, the variance between samples is 350 and variance within samples is 70. What is the test statistic F according to this information?
- 19
Which of the following problems requires a two-sided test?
- 20
In a market, a chef selects the first 5 vegetables he sees in the fresh vegetable boxes as her test samples. Which type of sampling method does the chef use?