Statıstıcs II (ENG)
Deneme Sınavı Soruları
- 20 soru
- Cevap anahtarı açık: çöz, sonucunu gör
- 1
For a company, 3 different states of nature are given as S1, S2 and S3 with possibilities 0.4, 0.5 and 0.1 respectively. The alternative actions on the other hand are given as A1, A2, and A3. What will be the best action provides the highest expected payoff and what will be the expected payoff given that action is taken; if the payoff matrix is given as:
- 2
What kind of distribution is used when a probability of obtaining an outcome, out of two outcomes, on one trial is known and a probability of the number of times the same outcome might appear, say x times out of n independent trials is tried to be found?
- 3Some 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?
- 4
In the significance test for Pearson's correlation coefficient, the following values are found: n=15, r=0.45. What is the observed statistic t for the sample information?
- 5
In a relationship examination between two variables, if the Pearson's coefficient is find as 0.90, which of the following expresses this value?
- 6
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?
- 7
Which of the following represents the amount of variability in the dependent variable that cannot be explained by the linear relationship between independent and dependent variables?
- 8
Which of the following is non-parametric statistics for two dependent samples?
- 9
If Wi stands for the weather type and Vi stands for the vehicle choosen by Ahmet to go to work, how will his payoff matrix would look like?
- 10
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?
- 11
In Hurwicz criterion, if the value of coefficient of optimism is equal to 1, what is the state of the mind of decision maker?
- 12
In multiple linear regression if SSR=235 and SST=500, what is the coefficient of determination?
- 13
In a binomial test, the investigaor is interested in the proportion of boys in a school. In the sample of 250 students, there are 175 boys. What is the value of P for a binomial test for boys?
- 14
How is the power of a statistical test calculated?
- 15
In a two population hypothesis testing problem, population standard deviations are 40 and 30, sample sizes are 125 and 225 respectively. If the z value is calculated, what is the value of denominator for z?
- 16
Interval estimation : the sample arithmetic mean is 14 and the lower limit of the confidence interval is 6, then what is the upper limit of the confidence interval?
- 17
The frequency of recovery from illness after therapy A in a sample of 640 is 160. What is the point estimate of population proportion for recovery from illness?
- 18
The process of estimating a population parameter by a single number derived from the sample is called _______________ estimation?
- 19
the government policy planner is selected 4000 people from the population using cluster sampling, clusters are organized according to the geographical regions. Then, planner is found that the 1000 people in the sample live under the poverty threshold. What is the point estimate of the population proportion?
- 20
There are 24 female ducks, 21 male ducks, 15 baby ducks, 27 female gooses, 18 male gooses, and 12 baby gooses in a farm. What is the population proportion estimate of babies in this farm?