Statıstıcs I (ENG)
Deneme Sınavı Soruları
- 20 soru
- Cevap anahtarı açık: çöz, sonucunu gör
- 1
- Arithmetic mean
- Standard deviation
- Variance
Which of the above determine(s) the shape of the normal random variable?
- 2
What does this equation tell us? - 3
Consider the random experiment of tossing a fair coin until a tail (T) and a head (H) show up once. Describe the sample space of this random experiment ?
- 4
If there were two dices thrown at the same time what would their total number of possible outcomes be?
- 5
The height of the students in a classroom are as follows;
155, 156, 157, 160, 162, 165, 170, 180.
Which of the following is the median of the given data?
- 6
What is the mean of f(x) = x for 0 ≤ x ≤ 4 equal to?
- 7
2 models will be randomly selected to walk in a fashion show in France. There are 2 models from an Italian agency and 3 of them work for a Turkish agency. If the event “one Turkish model Y and one Italian model X is chosen” is denoted by E, which one below is the listing the elements of E?
- 8
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 50th percentile of the data?
- 9
The box plot is given above shows the data about the number of hours spent on watching tv a day by students in a school.
Which of the following is not correct about the box plot data?
- 10
Probability density function for continuous random variable X is defined as follows;
f(x) = 0.02, for 0 ≤ x ≤ 50
Which of the following mean of the continuous random variable X?
- 11
The frequency distribution table of the students’ performance scores of a school were constructed as follows. What is the sample standard deviation of the data?
- 12
Data : 12, 16, 10, 20, 12 ; what is the mean deviation of these data ?
- 13
If one wants to model the number of customers entering to a fast food restaurant per hour, which probability distribution should he/she use?
- 14
- Frequently occurring words
- The lengths of sentences
- The number of words used just once
- Verbal responses in questionnaires
- Social media posts
Which of the above need recoding in order to create quantitative variables?
- 15
Which of the following is TRUE about symmetric bell-shape distributions?
- 16
Which of the following is true about relative frequency distribution table?
- 17
- Element
- Variable
- Concept
- Case
Which of the above are the key components of a data set?
- 18
A university student who successfully completed the course filled out the assessment questionnaire about the lecturer. What type of research method is mentioned here?
- 19
Which of the following is not big data?
- 20
Assume that you are investigating the smart phone preferences of people living in Turkey and you surveyed 2000 people in Denizli.
What can you say about results?