Statistics

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?

If a data set has two modes, it is called:

The mean of first n even natural numbers is:

Which chart uses cumulative frequency for its construction?

If the mean of 5 observations is 25, the sum of observations is:

What is the Q1 of: 10, 20, 30, 40, 50, 60?

In a symmetric distribution, the relationship between Q1, Q2, and Q3 is:

What is the mode of: 1, 1, 2, 2, 3, 3, 4, 4?

The arithmetic mean of 10 numbers is 7. If each number is increased by 11, the new mean is:

In a pie chart, if the angle of a sector is 36 degrees, it represents what percentage?

If the mean of x, x+2, x+4 is 12, find x.

Which of the following is not influenced by extreme values?