Define Real wage.

Define - real image.

What do you mean by Real wage?

Define the real valued function f: R -{0} to R" defined by "f(x)=1/x ;x in R-{0} . Complete the Table given below using this definition. What is the domain and range of this function?

Let N be the set of natural numbers. Define a real valued function f: N to n by f(x)=2x+1. Using this defination, complete the table given below,

Define a real number and state its important properties.

Let R be the set of real numbers. Define the real function f: R to R by f(x)=x+10 and sketch the graph of this function.

Consider the following distribution of daily wages of 50 workers of a factory. Find the mean daily wages of the workers of the factory by using an appropriate method.

In the frequency distribution table given below, the average daily wage is Rs. 117.

In an industrial establishment, the coefficients of variation of wages of male and female workers were 55% and 70% respectively. The standard deviations were Rs. 22 and Rs. 15.40 respectively. Calculate the combined average wages for all workers if 80% of the workers were male.

The frequency distributions of the weekly wages of some labourers of an industry are given below : The number of labourers having Rs. 25 weekly wages is unknown. But it is known that the average weekly wages of a labourer is Rs. 27.50 . Find the unknown frequency .