Data dashboards are a part of ....

Which of the below is not a measure of variability?

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

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

i. median

ii. max

iii. mode

iv. variation

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

Compute the mean and variance

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?

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)? 

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) ?