Statistics

The point of intersection of 'less than' and 'more than' ogives gives:

If the median of a dataset is 20 and each value is increased by 5, the new median will be:

Find the mean: 10, 20, 30, 40, 50, 60.

In a frequency table, the sum of relative frequencies is always:

What is the mean of the first five prime numbers starting from 2?

Given Mean = 20 and Median = 21, find the Mode using empirical formula.

If Σ(x - Mean) is calculated for any dataset, the result is:

Find the missing frequency 'p' if the mean of the data (x: 5, 10, 15; f: 2, p, 3) is 10.5.

For a continuous distribution, the median is 30. The median class is 20-40, frequency of median class is 10, and cumulative frequency before it is 15. Find total frequency N.

If the mean of observations x1, x2, ..., xn is M, what is the mean of (x1/k), (x2/k), ..., (xn/k)?

In a dataset, the mean is 15 and the coefficient of variation is 20%. Find the standard deviation.

If the sum of squares of 10 observations is 250 and their mean is 4, find the variance.

Find the Q1 of a continuous series where N=100, lower limit of Q1 class is 10, h=10, f=20, and cf=15.

If the mean of n numbers is x-bar, and each number is increased by 1, 2, 3, ... n respectively, what is the new mean?

In a frequency distribution, if the mean is 21 and the mode is 21, then the distribution is:

Find the missing frequency f for the class 20-30 if the median is 25, N=60, cf=20, and class interval size is 10.

The mean age of a group of 100 people was 30. Later it was discovered that age 45 was misread as 25. The correct mean is:

If the combined mean of two groups is 40, Group 1 has mean 35 (n=30), and Group 2 has mean 43, find the number of observations in Group 2.

Which partition value divides the distribution into four equal parts?

Find the median of the first 10 even numbers.