Descriptive Sta...

Choose the correct answer from the alternatives given.
Directions for questions 71 to 75: Study the following bar-graph and answer the questions.
The average electric consumption by the family during these 5 months in 2013 is

Choose the correct answer from the alternatives given.
Directions for questions 71 to 75: Study the following bar-graph and answer the questions.
For how many months in 2012, the consumption of electric units was more than the average units consumption?

If the sum of mean and variance of $$B.D$$ for $$5$$ trials is $$1.8$$, the binomial distribution is 

Variance of $$^{10}C_{0}, ^{10}C_{1}, ^{10}C_{2},^{10}C_{10}$$ is:

What is standard deviation of the set of observations $$32,28,29,30,31$$?

Study the following graph carefully and answer the question given.
Which of the following companies recorded the minimum percentage growth from $$1994$$ to $$1995$$?

Standard deviation of $$3, 5, 7, 9, 11, 13$$ is?

The variance of first $$20$$- natural numbers is?

Variance of the data given below

Standard deviation of the first $$2$$n + $$1$$ natural numbers is