Deneme Sınavı Soruları

For which of the following, does the probability density function f (x) of the continuous random variable X take a constant value over the range of the random variable X is defined?

Some of the illustrations of random variables that generally conform to model by means of Poisson distribution are presented below.Which illustration does NOT conform to this model?

The frequency distribution table of the students’ performance scores of a school were constructed as follows. What is the sample mean of the data?

Which of the following statements is true according to the box-plot given below?

Consider that continuous random variable X is uniformly distributed and takes values between 10 and 50. Find the probability of P (15 < X < 25) ?

Which of the following statement is not true about "percentiles"?

"For binomial distribution, its principal assumptions are n independent trials with two possible outcomes (success or failure) for each trial, and the success probability remains constant for each trial. On the other hand __________ distribution doesn’t involve with independence assumption for each trial and accordingly the sampling process is established on without replacement. Because of these features, it is broadly used in various real life applications especially for acceptance sampling in quality control."

Choose the correct option to complete blank in the paragraph given above. 

I. f (x) ≥ 0 for all x.

II. the area under probability density function between points a and b is equal to 1

III. P(a ≤ X ≤ b) is equal to 1

Which of the statements should the probability density function satisfy?

A bakery employs 10 people. The number of years’ experience that the employees of the company have is the following: 0, 0, 2, 4, 5, 8, 15, 17, 20, 24. What is the 50^th percentile of the data?

Which of the followings cannot be given as an example for random experiments?

Assume that 20 percent of Statistics course students in Anadolu University take Music course, 10 percent take Swimming course, and 4 percent take both Music and Swimming courses. What percentage of Statistics students neither take Music nor Swimming course?

1. Commerce
2. Insurance
3. Transport

In which areas above do big data set could be found?

Which of the following is not true about the pie chart?

Which of the following terms stands for errors caused by unknown and unpredictable factors?

Which of the following can be used to display the trends in continuous data over a period of time?

What is the mode of the following data set?

10, 19, 11, 26, 26, 26, 18, 20, 35, 99, 11, 14, 18, 18, 26, 20, 48

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?

1. Usually used to represent categorical data
2. Divides categories as sectors
3. Each sector's size shows the proportion of each category to the total

Which of the following do these features belong to?