In a two-way data table, you can compare how different values of one input variable influence the return on invested capital by holding the remaining input variables constant. True or False True False
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- In an ever-changing economy, the price of fuel is never constant for too long. The following table shows the average prices and quantities sold of petrol and diesel for June 2012 and June 2014 in the Western Cape. If the base year is 2012, find the Laspeyres quantity index. Round off to four decimals. Jun-12 Jun-14 Quantity Quantity sold sold (millions Price (millions Price Fuel of litres) (Rand) of litres) (Rands) Petrol 1698 9.83 1744 8.27 Diesel 1406 10.80 1489 7.67Principles is basic general truth about the cause and effect relationship between variables. True or falseSuppose that you are a researcher and wish to construct a linear mathematical (statistical) model that relates the number of years and the corresponding exports (million U.S.$) of a country. The constructed model may use to forecasts the future values. You have obtained the relevant data for the during of 1990 to 1995 and you have listed the data in Table 5. Table 5. Shows the list of the amount that have earned on exports Year No. 1 2 3 4 5 6 Exports 4954 6131 6904 6813 6803 8137 (a) Construct a suitable graph that explains the relationship between the number of years and the corresponding exports. (b) Construct a mathematical (Statistical) model by using least square method between number of years and the corresponding sales. (c) Interpret the slope of the estimated linear model (d) Forecast the value of exports by using the estimated linear model for the year of 2000
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