If the price of butter increases, then the demand for margarine will likely _____.

Which one is not a data collection method?

Gaining information from government archives and data repositories is an example of ______ data.

The table consists of the daily sales made individually by 8 salesmen of a company for one week. Calculate the standard deviation of the sales made.

Calculate the compound interest compounded half yearly for 1 year on $10000 at an interest rate of 6% per annum.

To construct a scatterplot, you need at least __________ variables to plot.

Which one is not a data collection method?