Ünite Sınavı Soruları

What is the level of a measurement for a variable with outcomes defined as "completely agree", "mostly agree", "neutral", "mostly disagree", "completely disagree" when measuring people's opinion about a particular subject?

Is your answer to this question data?

1. Statistics
2. Computer Science
3. Database Management
4. Data Visualization
5. Analytics

Which of the above really mean the same thing?

I- Is this medication improving the patient's health?
II- What is the warmest day for next week?
III-What are the process of monitoring healthcare services?
IV- What trends can we observe in climate change?
V- What is the weather outside today?

Which of the above questions should be solved using big data?

The variables are measured using an .............. scale, which not only shows the order but also shows the exact difference in the value.

Which type of scale should replace the blank space in the above sentence?

(I) The voting age is 18 in Turkey. There are 56 million people who are able to vote in Turkey.

(II) Before election, a public opinion poll was conducted with 2000 people.

(III) In this poll, 2000 people stated the party of their choice.

Which terms in the statements I, II and III above correspond to the following concepts in the statistics?

What type of variable are your exam grades such as A, B?

What type of measurement level is the reason for the people to travel shown in the figure above?

Which of the following is not data?

Your professor asked you to write an essay and stated that you would be assessed for the count of words in your essay. What form of numerical data would s/he study on?

A researcher wants to know if field trips will improve science academic achievement. For this purpose, it forms two separate groups from 6th grade students. One of the groups regularly goes to field trips (museum visits, science centers, etc.) once a week for 1 year. Students in the other group only take science lessons in the classroom. Science academic achievements of children are measured and compared periodically throughout the year.

Which of the following statements about this research is correct?

1. Commerce, especially online electronic commerce
2. Finance, for example share prices on stock markets, all managed electronically
3. Insurance, all the premiums, incidents, actuarial transactions in an insurance company
4. Biomedicine, especially in genetics, where information is literally exploding as gene-sequencing reveals and codes the total genetic profile of a person
5. Transport, for example in the airline industry, all the flights, all the passengers
6. Climate data, measurements from tens of thousands of weather stations across the world

In which of the areas above are big data mostly found?

What type of variable is your heart beat?

In a research investigating the effects of playing online games on aggressive behavior, 100 teenagers are observed. What statistical term represents these 100 teenagers in this particular experiment? 

As a general rule, most data on monetary values and those coming from physical measurements (e.g., l­ira, gold price, centimeters, kilograms) are _____ variables.

Which of the following options fills the blank in the above sentence in the most correct way?

The size of a ......I..... is always less than the size of the ......II....... from which it is taken.

Which of the following terms correctly completes the sentence above?

1. The main criteria for selecting a sample will be that the sample is representative of the population and that there is no or very little subjectivity in the choice of the sampling units.
2. Sampling is not only conducted by survey researchers on human populations, but also by auditors on a company’s accounts, by agricultural researchers on different pieces of land, and by quality control inspectors on products in a factory, to name only a few examples.
3. Data come in the form of numbers as well as text.
4. All observations can be reduced to some numerical quantity.
5. The way the sample is collected is crucial to obtaining a valid estimate.

Which of the above are correct?

Which of the following are not done by using statistics?

Is your answer to this question variable?