How do I solve it.

Conduct a survey at population in your locality taking a sample of atleast 50 families. Prepare a project report with respect to the following points:

i) Represent the data showing age using class intervals.
ii) Compute the average income of the families.
iii) Literacy level of the population in terms of Elementary, Secondary, Senior Secondary, Graduation and above.
iv) Find the variance of the income of the families.
v) Represent the data in part (iii) with the help of bar graph.