1. Calculate these descriptive statistics.
   1. Mean of sales
   2. Variance of materials costs
   3. Covariance of labor costs and materials costs
   4. Mean of labor costs
   5. Total sales
2. Calculate at least two more descriptive statistics for this dataset.

RegionSalesLabor CostsMaterials Costs1$2,070,279.00$59,313.00$25,489.002$2,253,758.00$84,294.00$24,159.003$1,158,833.00$61,570.00$27,903.004$1,916,107.00$75,704.00$26,936.005$2,209,766.00$73,411.00$20,282.006$1,344,758.00$58,071.00$27,327.007$1,525,285.00$63,391.00$20,948.008$2,101,502.00$71,228.00$22,553.009$2,343,835.00$63,438.00$26,483.0010$1,965,095.00$61,898.00$18,493.0011$1,426,194.00$85,093.00$28,694.0012$2,029,357.00$59,075.00$27,439.0013$986,042.00$78,975.00$26,713.0014$1,901,358.00$86,003.00$25,048.0015$1,465,856.00$86,628.00$27,959.0016$1,339,142.00$66,014.00$20,393.0017$1,200,863.00$57,088.00$20,524.0018$1,295,627.00$68,377.00$26,861.0019$892,951.00$63,295.00$23,854.0020$1,781,455.00$68,708.00$17,651.0021$2,004,767.00$72,406.00$24,306.0022$1,806,366.00$66,453.00$25,955.0023$1,589,468.00$73,428.00$25,793.0024$1,417,498.00$80,573.00$27,410.0025$1,007,695.00$71,824.00$27,023.0026$2,047,287.00$58,911.00$19,564.0027$633,691.00$70,385.00$18,798.0028$1,498,891.00$78,440.00$27,471.0029$845,502.00$56,672.00$28,614.0030$1,326,477.00$85,644.00$22,815.0031$2,269,852.00$80,518.00$21,864.0032$2,355,777.00$64,302.00$17,614.0033$537,921.00$67,073.00$18,759.0034$1,795,804.00$87,295.00$22,673.0035$1,135,573.00$70,522.00$24,010.0036$1,089,914.00$73,215.00$22,557.0037$2,011,619.00$78,151.00$28,035.0038$2,281,482.00$85,753.00$23,273.0039$921,194.00$76,725.00$20,106.0040$1,691,862.00$67,237.00$29,091.0041$1,268,440.00$73,632.00$28,556.0042$1,569,321.00$80,347.00$20,155.0043$823,068.00$80,167.00$19,767.0044$1,524,685.00$75,288.00$26,404.0045$1,908,126.00$63,282.00$25,759.0046$1,566,024.00$69,968.00$22,545.0047$1,619,888.00$83,180.00$28,056.0048$808,591.00$68,919.00$23,179.0049$1,040,239.00$67,078.00$19,997.0050$997,462.00$75,289.00$29,025.0051$801,630.00$68,497.00$18,740.0052$1,886,438.00$67,231.00$27,850.0053$864,289.00$83,353.00$21,987.00