Statıstıcs Iı Çıkmış Sorular, Online Deneme Sınavları, Çalışma, Dersler, Sınava Hazırlanma, vize, final

Soru 1:

In regression analysis, there are two types of variables, namely, ________ variable and ___________ variable .

A) independent, dependent B) discrete, continuous C) discrete, dependent D) dependent, correlation E) correlation, continuous

Soru 2:

A researcher wants to conduct a survey on the mathematics scores of the Turkish students in Turkey. Which of the following can not belong to the sample choosen for this survey?

A) Ali; a 11 years old student living in İstanbul. B) Ahmet; a 15 years old student living in Kızılcahamam. C) Aysun; a 10 years old student living in Berlin. D) Mehmet; a 8 years old student living in Eskişehir. E) Nazlı; a 12 years old student living in Mardin.

Soru 3:

Total price and quantity for products group A is 4 and 50, and 6 and 24, as unit a and unit b, for years X and Y, respectively. What is the Fisher’s price index for A for year Y when year X is the base ?

A) 200 B) 144 C) 36 D) 72 E) 125 / 9

Soru 4:

The payoff values for decision alternatives : there are 5 states of nature and minimum payoff values for 5 decision alternatives are I) 11.650, II) 10.025, III) 5.275, IV) 2.725, V) 3.450. The decision maker is pessimistic. Which decision alternative is choosen?

A) I B) II C) III D) IV E) V

Soru 5:

Monthly sales of companies X and Y are 45 units and 72 units, respectively. What is the index for X compared to Y?

A) 1.6 B) 500 / 9 C) 400 / 9 D) 62.5 E) 31.25

Soru 6:

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?

A) Sunny (W1)Rainy (W2)Snowy (W3)By Car(V1)101520By Bus(V2)202535 B) Sunny (W1)Rainy (W2)Snowy (W3)By Car(V1)151520By Bus(V2)203035 C) Sunny (W1)Rainy (W2)Snowy (W3)By Car(V1)202520By Bus(V2)103535 D) Sunny (W1)Rainy (W2)Snowy (W3)By Car(V1)152535By Bus(V2)202545 E) Sunny (W1)Rainy (W2)Snowy (W3)By Car(V1)102030By Bus(V2)152535

Soru 7:

In this test, the alternative hypotheses are constructed in three different ways. The hypotheses are shown as follows. H0 :The distribution of differences is symmetrical around MD = 0 H1a :The differences tend to be larger than MD = 0 H1b :The differences tend to be smaller than MD = 0 H1c :The differences tend to be larger than MD = 0 or smaller than MD = 0 Which test do the hypotheses given above belong to?

A) The Chi-square Goodness of Fit Test B) The Sign Test C) The Wilcoxon Rank Sum Test D) The Wilcoxon Signed Rank Test E) Kruskal-Wallis Test

Soru 8:

Answer the questions 7-8 according to following information. A company has 5 different alternative actions denoted by A1, A2,..A5 under 3 possible states of nature, which are denoted by S1, S2 and S3. The pay off matrix for each action and state of nature is given as: What will be the best action under maximax criterion?

A) A1 B) A2 C) A3 D) A4 E) A5

Soru 9:

İf the correlation coefficient is 0.40, n=25 what is the observed t value for the significance test for Pearson's correlation coefficient?

A) 1.85 B) 2.09 C) 2.81 D) 3.45 E) 5.75

Soru 10:

If we know the proportion P for one class, the proportion of Q for the other class must be equal to which of the following below?

A) 1-P B) 1-Q C) Q-P D) 1+P E) 1+Q

Soru 11:

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?

A) The Binominal Distribution B) The Sign Test C) The Chisquare Goodness of Fit Test D) Wilcoxon Rank Sum Test E) Kruskal-Wallis Test

Soru 12:

In general, __________________ looks at the relationship between variables and examines the degree of the relationship if there is any?

A) ANOVA B) the correlation analysis C) Hypothesis testing D) Mean E) Mode

Soru 13:

In a sign test the median is 12 and here are the observations in the sample: 5, 6, 8, 9, 14, 15, 16, 18, 20, 24. What is the n+ value for the sign test?

A) 2 B) 4 C) 6 D) 8 E) 10

Soru 14:

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?

A) 200 B) 50 C) 75 D) 32 E) 200 / 3

Soru 15:

What are the simple index numbers for this data set (Jane is base period)?

A) 130.00150.00116.67148.33166.67163.33 B) 100.00120.00156.67158.33186.67183.33 C) 100.00150.00216.67238.33446.67233.33 D) 160.00350.00116.67758.33466.67185.33 E) 100.00150.00116.67158.33166.67183.33

Soru 16:

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

A) 14 B) 15 C) 25 D) 26 E) 32

Soru 17:

A lecturer wants to learn if there is a relationship between the amount of time (in minutes) a student studies for an exam and the student’s mark of the exam. He finds the Pearson’s correlation coefficient between the amount of time spent for exam and the student’s mark of the exam as 0.905. Which of the following can be inferred from the data above?

A) There is no relationship between the variables. B) There is no linear relationship between the variables. C) The relationship between the variables is very weak. D) The relationship between the variables is very strong. E) The relationship between the variables is negative.

Soru 18:

The number of thefts occurring in each season (winter, spring, summer, fall) in a province for the last year is given below: Winter: 15 Spring: 25 Summer: 80 Fall: 70 What is the expected probability according to uniform distribution?

A) 1 B) 0.25 C) 25 D) 0.50 E) 50

Soru 19:

The payoff values for decision alternatives : there are 5 states of nature and the profit values for the first decision alternative are 66, 27, 104, 91, 87. The decision maker is pessimistic. Which payoff value is taken from the first decision alternative?

A) 104 B) 91 C) 87 D) 66 E) 27

Soru 20:

Which test is used to decide whether k independent samples are drawn from different populations?

A) The Sign Test B) Kruskal-Wallis Test C) The Wilcoxon Rank Sum Test D) The Wilcoxon Signed Rank Test E) Spearman Rank Correlation Coefficient