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A number is increased by 10% and then reduced by 10%. The resulting number is how much percent of the original?
If the price of a commodity is increased by 50%, by what fraction must its consumption be reduced so as to keep the same expenditure?
A student multiplied a number by 3/5 instead of 5/3. What is the percentage error in the calculation?
In an election, 10% of the voters on the list did not cast their votes and 60 voters cast their ballot papers blank. There were only two candidates. The winner was supported by 47% of all the voters on the list and he got 308 votes more than his rival. The number of voters on the list was:
A man spends 40% on food, 20% on rent, 10% on entertainment and 10% on conveyance. If his savings at the end of the month are Rs. 1500, find his monthly salary.
In a bar diagram, if all bars have equal heights, then:
Which of the following is the median class for a data where N=50 and CFs are 10, 22, 35, 50?
The mean of a data set is X. If each item is decreased by X, what is the new mean?
If the sum of 20 observations is 400, what is the mean?
The angle for a sector in a pie chart is 45 degrees. If total value is 800, find the value of that sector.
For the data 2, 8, 3, 7, 5, what is the mean deviation from the mean?
The median of 10 observations is 15. If each observation is increased by 2, what is the new median?
What is the lower limit of the class 10-19 in a discrete frequency distribution converted to continuous?
In a histogram, the area of a bar is 20 sq units. If the width (class interval) is 5, what is the frequency?
The mean of first n even natural numbers is:
Which chart uses cumulative frequency for its construction?