Attempt all the problems stated below:

problem 1: What do you mean by the term statistical survey? Describe different sampling methods.

problem 2:

a) What precautions must be taken while using the secondary data?
b) Why is tabulation significant? Describe the requisites of a good statistical table.

problem 3: Distinguish between the given terms:

a) Categorization and Tabulation.
b) Multiple Bar Diagram and Sub Divided Bar Diagram.
c) Mixed Graph and Range Graph.
d) Histogram and Historigram.

problem 4: Find out mean from the given distribution by step deviation method.

problem 5: prepare short notes on the given terms:

a) Dispersion.
b) Mean Deviation.
c) Standard Deviation.
d) Lorenz curve.