The Alpine Hotel near Kosciuszko National Park in NSW, has accumulated records of the total electrical costs of the hotel and the number of occupancy-days over the last year. An occupancy-day represents a room rented for one day. The hotels business is highly seasonal, with peaks occurring during the ski season and in the summer.

Month	Occupancy-Days		Electrical Costs
January	1,736		$4,127
February	1,904		$4,207
March	960		$2,857
April	2,620		$5,732
May	840		$2,691
June	744		$2,696
July	2,108		$4,670
August	2,406		$5,148
September	130		$1,499
October	360		$1,871
November	720		$2,454
December	1,364		$3,529

Required:

Using the high-low method, estimate the fixed cost of electricity per month and the variable cost of electricity per occupancy-day. Round off the variable cost to the nearest cent and the fixed cost to the nearest dollar. (4 marks)

What other factor in addition to occupancy-days is likely to affect the variation in electrical costs from month to month? (1 marks)