You start a summer job serving ice cream at the shore. The manager notices that since you started the job, the average portion size given to customers has gone up substantially. This is a result of assignable cause variation. True or false?

given statement is true

Explanation:

As when we start a new job for serving ice cream

so that time manager see due to assignable cause variation that customers gone up substantially

because assignable cause variation is occurs when there is the change of the input or in the environment variables

so we can say the given statement is true