Statistics

The frequency distribution of life of 90 TV tubes whose median life is 17 months is as follows: What is the lower limit of the median class?

An analysis of monthly wages paid to the workers in two firms A and B belonging to the same industry the following result: The average of monthly wages and variance of distribution of wages of all the workers in the…

What is the difference between the number of females and the number of males in the year 1995?

A random sample of 20 people is classified in the following table according to their ages: What is the mean age of this group of people?

The following table gives the continuous frequency distribution of a continuous variable X: What is the median of the above frequency distribution?

What is the urban population in the year 1997?

The table below gives an incomplete frequency distribution with two missing frequencies $f_1$ and $f_2$. The total frequency is 18 and the arithmetic mean of X is 2 . What is the value of $f_2$ ?

The following table gives the frequency distribution of number of peas per pea pod of 198 pods : What is the median of this distribution?

Consider the following grouped frequency distribution : $\begin{array}{|l|l|l|l|l|l|l|} \hline \text { Class } & 0-10 & 10-20 & 20-30 & 30-40 & 40-50 & 50-60 \\ \hline \text { Frequency } & 1 & 2 & 4 & 6 & 4 & 3 \\…

Paragraph: Read the following information and answer: Question: The difference between number of students under Physics and Mathematics is largest for the interval

In which year is the female population maximum?

Consider the following data: What is the variability in the wages of the workers in Factory-A?