smp_2023Q2_week04_quiz
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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