Should both favorable and unfavorable variances be investigated,or only the unfavorable ones? Explain.

Any significant variance,whether favorable or unfavorable,should be investigated.A significant variance may indicate that the standard is unreasonable and needs to be adjusted.An unfavorable variance may indicate a problem requiring corrective action.A favorable variance may indicate better than expected performance.Management should investigate to determine if the methods used to generate the favorable result could be implemented again or duplicated elsewhere.