# Solve the following problem : The following table shows the production of pig-iron and ferro- alloys (‘000 metric tonnes)Fit a trend line to the above data by graphical method. - Mathematics and Statistics

Graph

Solve the following problem :

The following table shows the production of pig-iron and ferro- alloys (‘000 metric tonnes)

 Year 1974 1975 1976 1977 1978 1979 1980 1981 1982 Production 0 4 9 9 8 5 4 8 10

Fit a trend line to the above data by graphical method.

#### Solution

Taking year on X-axis and production on Y-axis, we plot the points for production corresponding to years. Joining these points, we get the graph of time series, we fit a trend line as shown in the figure.

Concept: Measurement of Secular Trend
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Chapter 4: Time Series - Miscellaneous Exercise 4 [Page 69]

#### APPEARS IN

Balbharati Mathematics and Statistics 2 (Commerce) 12th Standard HSC Maharashtra State Board
Chapter 4 Time Series
Miscellaneous Exercise 4 | Q 4.01 | Page 69
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