The overall $336 unfavorable activity variance is due to activity falling below what had been planned for the month. The $1,710 unfavorable revenue variance is very large relative to the company’s net operating income and should be investigated. Was this due to discounts given or perhaps a lower average number of passengers per flight than usual? The $494 unfavorable spending variance for wages and salaries is also large and should be investigated. The other spending variances are relatively small, but are worth some management attention—particularly if they recur next month.