Verification work on econometrics

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The generalized method of least squares 4

The types of mathematical models, the types of data used in the models 10

Task №1 13

Problem №2 16

Problem №3 18

Additional information

Task №1

The experimentally obtained values \u200b\u200bof the function y = f (x), which are recorded in the table:

X 12 13 14 15 16

Y 4,3 5,3 3,8 1,8 2,3

Find a least-squares function of the form y = ax + b. Make a drawing.

Problem №2

During the month, 10 were received marginal income levels (as a percentage of revenue):

17; 15; 18; 19; 20; 16; 15; 14; 18; 17

Using the method of exponential smoothing interval (k = 0.2) will get the predicted value for the 11-second result.

Problem №3

Determine the kind of empirical formula corresponding to the following table:

X 2 3 4 5 6

Y 26 51 77 132 312

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