Descriptive Sta...

For the information given below,Find quartile deviation and coefficient of quartile deviation

Mean of $$10$$ observations is $$50$$ and their standard deviation is $$10$$. If each observation is subtracted by $$5$$ and then divided by $$4$$, then the new mean and standard deviation are

The arithmetic mean of the observations 10,8,5,a,b is 6 and their variance 6.8. Then ab=

What is the average monthly expenditure (Rs. in lakhs) for January to July during the year 2005?

The line graph show the number of cars Jatin sold over the past $$5$$ weeks.
If he was paid $$Rs \ 20000$$ for every car sold, how much was he paid over the past $$5$$ weeks?

An Um contains $$4$$ white and $$3$$ red balls. $$X$$ is the no. of red balls. Find the Mean and Variance of $$X$$.

The given pictograph shows the number of wall clocks sold by a company during a week..Each clock in the pictograph represents $$5$$ wall clocks. How many more wall clocks were sold on Thursday than on Tuesday?

The given bar graph shows the number of residents at 6 places. Study the graph and answer the questions. How many more residents were residing at China town than at Lajpat nagar?

The bar graph shows the number of traffic accidents in a country from year $$2000$$ to $$2014$$ . What is the difference between accidents in the year $$2001$$ and $$2004$$.

The given pictograph shows the number of wall clocks sold by a company during a week.Each clock in the pictograph represents $$5$$ wall clocks. On what day was the sale maximum?