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Statistics Exercise | Example 2

 The exercise:

The following table represents the annual production development in tons for a certain type of fish in one of the aquatic farms for fish farming.

Statistics exercise with answer for grade 12

1) Represent The scatter plot attached to the statistical series in a perpendicular coordinate system.

On the abscissa axis, 2 cm represents one year, and on the ordinate axis, 1 cm represents 100 tons of fish.

2)  Determine the coordinates of the middle point G of the scatter plot.

3) Prove that the least squares regression line equation is: y=115x+411.67.

4) Determine the production of this water reservoir in the year 2015.

(All results are given rounded to 10-2).


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