Question

The data below show fruit exports in tonnes from a particular region.

a. Analyse the data as a time series. (Level 3, Sta3.2.3.6)
b. Estimate exports in March 2013. (Level 3, Sta3.2.3.5)

3. The data below show fruit exports in tonnes from a particular region. Tonnes 117.2 113.5 109.4 124.4 Date Tonnes Date Tonnes Date Mar-08 36.3 Mar-10 77.5 Mar-12 Jun-08 32.4 Jun-10 73.2 Jun-12 Sep-08 27.6 Sep-10 69.1 Sep-12 Dec-08 41.3 Dec-10 83.3 Dec-12 Mar-09 56.3 Mar-11 97.7 Jun-09 52.3 Jun-11 93.5 Sep-09 48.6 Sep-11 89.5 Dec-09 63.7 Dec-11 103.6 a. Analyse the data as a time series. (Level 3, Sta3.2.3.6) b. Estimate exports in March 2013. (Level 3, Sta3.2.3.5)

Answer 1

(a) The plot is:

Regression 140 120 100 80 60 40 20 0 0 5 10 15 20 25 Series1 Linear (Series 1)

(b)

Period	Demand (y)	Period(x)
Period 1	36.3	1
Period 2	32.4	2
Period 3	27.6	3
Period 4	41.3	4
Period 5	56.3	5
Period 6	52.3	6
Period 7	48.6	7
Period 8	63.7	8
Period 9	77.5	9
Period 10	73.2	10
Period 11	69.1	11
Period 12	83.3	12
Period 13	97.7	13
Period 14	93.5	14
Period 15	89.5	15
Period 16	103.6	16
Period 17	117.2	17
Period 18	113.5	18
Period 19	109.4	19
Period 20	124.4	20
Intercept	23.3294737
Slope	4.97052632
Forecast	127.710526	21