Statıstıcs I (ENG)
Ünite Sınavı Soruları
- 10 soru
- Soru metinleri açık; şıklar ve cevap anahtarı uygulamada
- 1
If one wants to model the number of customers entering to a fast food restaurant per hour, which probability distribution should he/she use?
- 2
X=x
1
2
3
4
P(X=x)
0,20
0,30
0,30
0,20
Which of the following is the standard deviation of the given data above?
- 3
X=x
1
2
3
4
P(X=x)
0,20
0,30
0,30
0,20
Which of the following is the variance of given data above?
- 4
I. It carries a unique numerical value.
II. It is determined by random probability experiment and its associated outcome
III. In statistical notation, random variables represented by lower case such as x and y.
Which of the following statements above are TRUE for random variables?
- 5
Study the following discrete probability distribution:
According to table what is the probability that the result is equal to 2 or less?
- 6
A support centre receives 8 calls per hour and the number of the calls follows the Poisson distribution.
Which of the following is the probability exactly 6 calls in an hour?
- 7
Find out the mean score of the following data set: 10,20,40,60,100?
- 8
Which of the following is a discrete random variable?
- 9
The _______________ of a discrete random variable is a list of odds associated with each of its possible values.Which of the following is appropriate for filling in the blank above?
- 10
I. The number of students in a class.
II. The time spent on doing an assignment.
III. The height of the students.
IV. The number of laptops in a school.
Which of the variables above is an example of a discrete random variable?