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smp_2023Q2_week04_quiz

Quiz by smp

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8 questions
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  • Q1

    Data dashboards are a part of ....

    Simulation

    Descriptive analytics

    Optimization

    Predictive analytics

    Prescriptive analytics

    60s
  • Q2

    Which of the below is not a measure of variability?

    mode

    range

    whisker

    standard deviation

    coefficient of variation

    60s
  • Q3

    Which of the below is not a good example of skewness?

    Individual income in USA

    Height of age 50-60 females in Ankara

    Car prices in Bursa's district Nilüfer 

    Support for liberalism among people in Turkey

    Education levels of Müslüm Gürses's fans

    60s
  • Q4

    If a distribution is exactly normal, the mean is equal to

    i. median

    ii. max

    iii. mode

    iv. variation

    i, ii

    i, iii

    ii, iv

    iii, iv

    i, iv

    60s
  • Q5

    X is a variable with following values and pmf respectively; (2,3,4) , (0.3, 0.4, 0.3) 

    Compute the mean and variance

    3, 1.2

    2.8, 1.2

    3, 0.1

    3, 0.2

    2.8, 0.6

    120s
  • Q6

    We have a 5-sided dice. 

    - These side values are {2,4,8,16,16} 

    - The sides have realization probability inversely proportional to their faces values {1/2, 1/4 ... 1/16}

    What is the expected value of a throw?

    4.5

    4

    3.5

    5

    3

    300s
  • Q7

    Toss a coin 2 times.

    - Let A = "at least 1 heads"

    - Let B = "first toss is tails"

    When B realized, the probability of A => P(A|B)? 

    When A realized, the probability of B => P(B|A)? 

    1/4, 1/3

    1/3, 1/4

    1/2, 1/3

    1/2, 1/2

    1/2, 1/4

    120s
  • Q8

    X is a random variable.

    - The values of X are {2,4,5,6,7}

    - The cdf (cumulative probability} of it are {0.25, 0.40, 0.75, 0.80, 1.00} 

    What are P(X<=5) and P(X=7) ?

    0.25, 0.40

    0.75, 0.05

    0.25, 0.25

    0.75, 0.20

    0.40, 0.80

    60s

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