Question

a straight line trend by least square method and tabulate the trend value
Year 1990 1991 1992 1993 1994 1995 1996
Value 40 47 49 42 45 50 52

Answer 1

Step-by-step explanation:

Trend Equation Y

t

=a + bx

For calculating the values of a and b, we may use the following equations -

∑Y=na+b∑X

∑XY=a∑x+b∑x

2

Substtuting the values given in the question you can get the trend values.