In determining monthly seasonal indexes for gas consumption, the sum of the 12 means for gas consumption as a percentage of the moving average is 1150. To get the seasonal indexes, each of the 12 monthly means is to be multiplied by?

To determine the seasonal indexes for gas consumption, we need to find the multiplication factor for each of the 12 monthly means. In this case, the sum of the 12 means for gas consumption as a percentage of the moving average is 1150.

To calculate the multiplication factor for each monthly mean, we can use the following formula:

Multiplication factor = (Sum of means) / 100

In this case, the sum of the means is 1150, so the multiplication factor would be:

Multiplication factor = 1150 / 100
Multiplication factor = 11.5

Therefore, each of the 12 monthly means should be multiplied by 11.5 to calculate the seasonal indexes for gas consumption.