Question: Using Control Limits to Determine When to Investigate a Variance Kavallia Company set a standard cost for one item at $328,000; allowable deviation is $14,500.

Using Control Limits to Determine When to Investigate a Variance

Kavallia Company set a standard cost for one item at $328,000; allowable deviation is $14,500. Actual costs for the past six months are as follows:

June $330,500 September $314,000
July 343,000 October 332,000
August 346,800 November 323,000

Required:

1. Calculate the variance from standard for each month.

Variance
June $ < >FavorableUnfavorable
July $ < >FavorableUnfavorable
August $ < >FavorableUnfavorable
September $ < >FavorableUnfavorable
October $ < >FavorableUnfavorable
November $ < >FavorableUnfavorable

Which months should be investigated?

June < >InvestigatedNot investigated
July < >InvestigatedNot investigated
August < >InvestigatedNot investigated
September < >InvestigatedNot investigated
October < >InvestigatedNot investigated
November < >InvestigatedNot investigated

2. What if the company uses a two-part rule for investigating variances? The allowable deviation is the lesser of 4 percent of the standard amount or $14,500. Now which months should be investigated?

June < >InvestigatedNot investigated
July < >InvestigatedNot investigated
August < >InvestigatedNot investigated
September < >InvestigatedNot investigated
October < >InvestigatedNot investigated
November < >InvestigatedNot investigated

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