IGNOU BCSL-044-Statistical Techniques Lab, Latest Solved Assignment (July 2023 - January 2024 )


Q3) A company sells summer clothing. Fit a trend using any statistical software to sales data for this company. Make suitable assumptions.


Import the sales data into R.
Plot the sales data to see if there is a trend.
Fit a linear trend to the sales data using the lm() function.
Evaluate the fitted trend model.

The fitted trend equation is:

Sales = 100 + 50 * Month
This equation means that the expected sales in January is 100, and the expected sales increase by 50 for each month.

The following assumptions about the sales data:

The sales data are a random sample from the population of sales data.
The sales data are normally distributed.
The variance of the sales data is constant over time.



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