Base year is 2014.
∴ p0 = Price in 2014,
q0 = Quantity in 2014,
p1 = Price in 2015,
q1 = Quantity in 2015.
To compute Laspeyre’s, Paasche’s and Fisher’s index numbers for the year 2015, the table of calculation is prepared as follows:

Laspeyre’s index number:

Paasche’s index number:

Fisher’s index number:
\(I_P=\sqrt{I_L \times I_P}\)
\(=\sqrt{126.72\times 126.85}\)
\(=\sqrt{16074.432}\)
= 126.78