Aof Panel

Soru 1

Which of the following is a discrete random variable?

Soru 2

Which of the following is a continuous random variable?

Soru 3

I. The air pressure on a tire on an automobile II.The number of students who actually register for classes III. The amount of liquid in a can of cola IV. The temperature of a cup of coffee Which of the variables above are examples of a continuous random variable?

Soru 4

What is the set for the possible values of the random variable stated below?

"The number of coins that match when three coins are tossed at once."

Soru 5

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?

Soru 6

"__________is a widely employed discrete probability distribution in statistics where a set of independent observations constitutes exactly two disjoint outcomes of a trial."

Which option completes the definition given above?

Soru 7

"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.

Soru 8

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?

Soru 9

What is a central tendency measure of the probability distribution?

Soru 10

I. The time a person spends on reading a day

II. The amount of water a person drinks a day

III. The weight gain of a person in a month

Which of the variables given above are examples of a continuous random variable?

Soru 11

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?

Soru 12

Which of the following is a discrete random variable?

Soru 13

X=x 1 2 3 4 P(X=x) 0,20 0,25 0,30 0,30 Which of the following is the mean (μ) for the probability distribution given above?

Soru 14

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?

Soru 15

I. The number of people in a mall. II. The speed of a car. III. The exam points of students in a class. Which of the variables above continuous random variable?

Soru 16

Consider the probability distribution for the random variable X given below and determine the probability of P (1.5 < X ≤ 4) =?

Soru 17

Which of the following is not true about binomial distribution?

Soru 18

X=x

1

2

3

4

P(X=x)

0,20

0,30

0,20

Which of the following is the mean of given data above?

Soru 19

X=x

1

2

3

4

P(X=x)

0,20

0,30

0,20

Which of the following is the variance of given data above?

Soru 20

X=x

1

2

3

4

P(X=x)

0,20

0,30

0,20

Which of the following is the standard deviation of the given data above?

İSTATİSTİK I