1)The difference between the actual cost driver amount and the standard cost driver amount, multiplied by the standard variable overhead rate is the -variable overhead rate variance. variable overhead efficiency variance. variable overhead volume variance. over - or underapplied variance. 2)The difference between the actual variable overhead rate and the standard variable overhead rate, multiplied by the actual amount of the cost driver, is the variable overhead rate variance. variable overhead efficiency variance. variable overhead volume variance. over - or underapplied variance. 3)Budgeted cost of goods sold should include which of the following? Solution 1. variable overhead efficiency variance 2. the variable overhead rate variance 3. .