Statıstıcs II (ENG)
Deneme Sınavı Soruları
- 20 soru
- Cevap anahtarı açık: çöz, sonucunu gör
- 1
Which one of the following is used for the hypothesis test about the population median?
- 2
If the independent variable explains the 48% of the variability of the dependent variable, what might be the correlation coefficient between this independent and dependent variables?
- 3
Price of X is 4, 8, and 6 units on January, May, and June, respectively. What is the chain-based simple price index for May?
- 4
What is the chain-based simple index for Duke according to table?
- 5
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?
- 6
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?
- 7
Decision maker defines the coefficient of optimism as 0.2 , then what is the coefficient of pessimism?
- 8
A decision alternative has 15 and 35 as payoff values and the probabilities of the associated states of nature are 0.6 and 0.4 respectively. What is the expected monetary value of this decision alternative?
- 9
How do you measure the degree of a relationship between two continuous variables?
- 10
Total price and quantity for products group A is 15 and 8, and 25 and 6, as unit a and unit b, for years X and Y, respectively. What is the Paasche’s price index for A for year X when year Y is the base?
- 11
What would be the best action under minimin criterion?
- 12
What is the chain-based simple index for Dean according to table?
- 13
A ________________ index number is constructed to show the changes when there are a number of different items collected together?
- 14
Which sampling method provides observation of habits, opinions, and viewpoints in the easiest possible manner?
- 15
For a statistical test following a normal distribution, the alternative hypothesis is that the mean equals to a hundred and the standard deviation is s = 20. A sample of 25 observations is randomly selected and the sample average is equal to 102. What is the test statistic equal to?
- 16
What will be the degrees of freedom for two samples whose sample sizes are "m" and "n" and if the population variances are assumed to be equal for testing the difference between two means?
- 17
The standard deviation of the sampling distribution of the sample mean is ___________ than the population standard deviation?
- 18
Interval estimation : the limits of the confidence interval are (205, 245), the significance level is 0.05. What is the sample arithmetic mean?
- 19
if the type I error is 0.05 and a two-sided hypothesis testin is investigated, what is the z value from the standard normal distribution table?
- 20
If you reject the null hypothesis when the null hypothesis is false, what is the decision?