Deneme Sınavı Soruları

In a binomial test, what is the sample size to decide whether the sample size is small or large?

The payoff values for decision alternatives : there are 5 states of nature and the cost value for the first decision alternative is 12 according to optimist and 15 according to pessimist. If coefficient of optimism is 0.2, what is payoff value for the first decision alternative?

It is based on the agreement between the distribution of a set of observed values and some particular theoretical distribution. This one sample test determines whether the scores in the sample come from a population with theoretical distribution.

Which of the following tests is described above?

The manager of a company has looked at the monthly average sales of a product for the last ten years and created the table below :

Choosing January as a base; what is the the simple index number for April?

What is the non-parametric alternative of t test?

Which of the following interpretations is true if the negative value is-0.2 ≥ r > 0.4 in the interpretation of Pearson’s Correlation Coefficient?

In an index, base value is 50 and today's value is 200, what is the simple index number for today's value?

If the SSR in multiple regression model is 125 and k=5, then what is MSR?

Price of X is 3, 4, and 2 units on March, April, and May, respectively. What is the chain-based simple price index for April?

Which index indicates the change in the price of a single item between two consecutive periods?

Assume that the standard deviations of dependent and independent variables are 2.30 and 1.25 respectively. Besides their correlation coefficient is 0.60. What might be the possible regression model for those variables?

Sample values for a continuous variable are as follows (phone charger output voltage ; as volt) : 4.4, 5.6, 4.5, and 5.5. What is the point estimate of the population arithmetic mean?

I.  The null hypothesis defines what the decision maker’s conclusion is if he/she accepts the alternative hypothesis. 

II. The null hypothesis H₀ is a statistical statement which specifies that there is a specific value of a population parameter.

III. The alternative hypothesis H₁ specifies that there is a difference between the value of a population parameter and a certain value. 

Which of the given statements can be said about the null and alternative hypotheses?

A researcher decides to use systematic sampling. The population to be researched has a member of 3.380 and the sample size is 65 units. If the researcher starts sampling form the 15th unit, which of the following is one of the units to be sampled?

What is a statistical statement which specifies that there is a specific value of a population parameter?

"If all the members in selected clusters are included in the sample, the method is called ______________. If only a sample of members taken from the clusters are included in the sample, the sampling method is ______________."

Which of the following correctly completes the blanks with the right order?

A power bank’s charging time is 5 hours. 50 power banks are selected and tested for their charging time. The average charging time of these power banks is 5.05 hours. It’s assumed that the power bank charging time is normally distributed with a standard deviation as σ = 0.2 hours. 

What is the sample size (n) according to the situation above?

A linguist interviews with speakers of a rare languge A. She selects a few speakers to start with and at the end of interview he asks if the participant knows any other speakers that might want to participate. Which type of sampling method does the manager use?