Estimate the production for 1962 and 1965 from the following data

year	1961	1962	1963	1964	1965	1966	1967
Production in tonnes	200	-	260	306	-	390	430

From the following data, calculate the value of e^1.75

x	1.7	1.8	1.9	2.0	2.1
ex	5.474	6.050	6.686	7.386	8.166

From the data, find the number of students whose height is between 80 cm and 90 cm

Height in cm (x)	40-60	60-80	80 - 100	100-120	120-140
No. of. students (y)	250	120	100	70	50

From the following table, estimate the premium for a policy maturing at the age of 58.

Age (x)	40	45	50	55	60
Premium (y)	114.84	96.16	83.32	74.48	68.48

Using Lagrange's formula find the value of y when x = 4 from the following table.

x	0	3	5	6	8
y	276	460	414	343	110