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İST209U

Statıstıcs I (ENG)

Deneme Sınavı Soruları

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0 doğru · 0 yanlış · 20 kaldı
  1. 1

    In binomial distribution, "The probability of success, denoted by and the probability of failure, denoted by remains _____________ for all trials"?

  2. 2

    What is the mean of f(x) = x for 0 ≤ x ≤ 4 equal to?

  3. 3

    What is the mean of f(x) = x for 0 ≤ x ≤ 4 equal to?

  4. 4

    In how many different ways can the letters in P R O B A B I L I T Y be arranged?

  5. 5

    What is a central tendency measure of the probability distribution?

  6. 6

    Events A, B, and C are all independent and that B and C are mutually exclusive events. P(A)=0.04, P(B)=0.03, and P(C)=0.02. What is the probability that events A and B will occur or A will not occur and C will occur?

  7. 7

    In Binomial distribtuion, Each trial has only_________ possible outcomes?

  8. 8

    Which statements below are correct?

    I Exponential distribution is a type of a discrete random variable.

    II Discrete random variables have only a countable number of distinct values.

    III A discrete random variable typically comprises of a counting concept.

    IV Continuous random variables represent entire infinite values in an interval.

    V Continuous random variables are commonly measured instead of counted.

  9. 9

    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 80th percentile of the data?

  10. 10

    Pdf for continuous random variable X is defined as follows;
    f (x) = 0.02, for 0 ≤ x ≤ 50. What is he variance of the continuous random variable X?

  11. 11

    Which of the following is not true about percentiles?

  12. 12
    1. f (x) ≥ 0 for all x values
    2. The normal distribution function curve is symmetric around the mean, μ
    3. The probability density function f (x) does not the touch and intersect x axis

    Which of the above is/are the properties that probability density function  f (x) of normal distribution has?

  13. 13

    Which of the following is the most important and widely used measure of variability in statistics ?

  14. 14

    Which of the following do not constitute “big data”?

  15. 15

    Which of the following matches is wrong?

  16. 16

    Which of the following is true about cumulative frequency distribution table?

  17. 17
    1. It is the best measure of central tendency for nominal data.
    2. It is the middle value of an ordered dataset.
    3. It can be preferred when the distribution is skewed.

    Which of the given above about median is true?

  18. 18

    What is the geometric mean of the following data set?

    64, 125, 216

  19. 19

    Mode is the.......value in a data set.

    Which of the following correctly fills in the blank in the sentence above?

  20. 20

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

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