Statıstıcs II (ENG)
Deneme Sınavı Soruları
- 20 soru
- Cevap anahtarı açık: çöz, sonucunu gör
- 1
Which of the following hypotheses does NOT belong to Wilcoxon Rank Sum Test?
- 2
If SSR = 125 and SSE=248, then what is SST?
- 3
The payoff values for decision alternatives : there are 6 states of nature and the profit value for the first decision alternative is 30 according to optimist and 20 according to pessimist. If coefficient of optimism is 0.8, what is payoff value for the first decision alternative?
- 4
Which of the followings is widely used in order to show the degree of the relationship between two continuous variables?
- 5.........................is a non-parametric alternative test for one sample t test, paired sample t test, and a researchin which quantitative measurements is impossible but in which it is possible to rank the measurements with respect to each other. It is used for the hypothesis test about the population median, M. Inferences about the population median are important when the population has highly skewed distribution. Which of the following test should be writen to the gap?
- 6
What is the coefficient of determination if the correlation is 0.4?
- 7
Which of the followings happen once the path is identified, from the payoff matrix?
- 8
The following table show the prices and quantities of 4 products. According to the value of the Laspeyres Price index for 2020 using 2015 as the base period, which of the followings shows the correct definition about the price of the product group from 2015 to 2020?
- 9
I. H1 : The first population is shifted to the right of the second population
II. H1 : The first population is shifted to the left of the second population
III. H1 : The first and the second populations are shifted from each otherWhich of the above is the correct alternative hypothesis sentence for Wilcoxon Rank Sum Test?
- 10
The table given above indicates the correlation coefficients between A, B, C and D variables. According to those correlations, which one of the following statement is wrong?
- 11
In a binomial test, if the P is 0.40, what is the value of Q?
- 12
Which of the followings represents random error in simple linear regression model?
- 13
When are the weighted index numbers used?
- 14
In a classroom there are 25 students. Out of these 25 students 10 of them are male. If a hypothesis testing procedure for the population proportion of female students is to be created, what is the value of the sample proportion of the female students?
- 15
Sample values for a continuous variable (weather temperature in a day ; as oC) : 10, 16, 20, and 28. What is the point estimate of the population arithmetic mean?
- 16
In an investigation, if the confidence level is 0,95 ; what is the significance level of this study?
- 17
(Answer the question 7, 8 and 9 according to those information)
Consider the following hypothesis:
H0: μ = 80
H1: μ ≠ 80
A random sample of 16 observations is randomly selected from normally distributed population. The mean of the sample is 90 and the standard deviation of the sample is 5. Test the null hypothesis given above with %95 confidence level.
What is the critical value for that test procedure?
- 18
Sample values for a continuous variable (water flow rate ; as liter / hour) : 6, 12, 17, 36, 26, 15, 34, and 2. What is the point estimate of the population arithmetic mean?
- 19
In which sampling methods one uses stratums?
- 20
Which of the following is not one of the reasons for sampling from a population?