Statistics Test...

The average monthly salary of workers in a factory is Rs. 206. If the average monthly salaries of males and females respectively are Rs. 210 and Rs. 190, then the percentage of females employed in the factory is

If the standard deviation of 1, 2, 3, 4, & ..,10 is s, then the standard deviation of 11, 12, 13, 14, & ..20 is

The quartile deviation of the following items 12, 7, 15, 10, 16, 17, 25 is

Which of the following is a measure of central tendency?

If the variance of a data is V, then its standard deviation is

The most stable measure of central tendency is:

The two lines of regression are x + 4y = 3 and 3x +y = 15 . value of x for y = 3 is

What is the relationship between mean, median and mode for a moderately skewed distribution?

For a moderately skewed distribution, quartile deviation and the standard deviation are related by

The mean of 50 observations is 36. If two observations 30 and 42 are deleted, then the mean of the remaining observations is

You are collecting data from newspapers and magazines about price fluctuations of a branded product. What type of data are you referring to?

If r is the correlation coefficient, then