Suppose total 1000 juices had been produced in a factory. Consumers Association appointed a quality controller to find out the defective number of juice bottle from a lot of whole day production. So, he took 20-30 bottles of different types of juice like "Mango juice", "Orange juice", "Lichi drink" and "Mixed fruit juice" from a lot. Then he started to measure the amount of liquid (in milliliter) to find out the defective piece in case of amount of liquid within a bottle. In this situation,

i) Which one is the variable? Is the variable qualitative or quantitative? Why? Is the variable discrete or continuous? Why? Which is the scale of measurement of this variable? Why?

ii) Which method of primary data collection has been selected by the quality controller? Why?

What are the advantages that he will get by incorporating this method of data collection? What are the disadvantages of using this method?

iii) Is there any other appropriate method of primary data collection according to you? Why?

iv) Among 1000 juices which will be best probability sampling technique according to you to select 122 juices as your sample at juice factory. Give your opinion in favor of it. Explain the procedure of the quality controller to select the sample? What are the advantages and disadvantages of using this methods?

v) Construct a frequency table for your hypothetical data where sample size is 20-30. Calculate relative frequency, percentage of frequency, cumulative frequency, mid values. vi.Which graphical representation is appropriate for this type of variable? Why? Draw all the appropriate representations