Regression Problem

profilecybacatx
franchise-data-2.xlsx

given

sales sqft inventory advertising competing
231,000 3,000 294,000 8,200 11
156,000 2,200 232,000 6,900 12
10,000 500 149,000 3,000 15
519,000 5,500 600,000 12,000 1
437,000 4,400 567,000 10,600 5
487,000 4,800 571,000 11,800 4
299,000 3,100 512,000 8,100 10
195,000 2,500 347,000 7,700 12
20,000 1,200 212,000 3,300 15
68,000 600 102,000 4,900 8
570,000 5,400 788,000 17,400 1
428,000 4,200 577,000 10,500 7
464,000 4,700 535,000 11,300 3
15,000 600 163,000 2,500 14
65,000 1,200 168,000 4,700 11
98,000 1,600 151,000 4,600 10
398,000 4,300 342,000 5,500 4
161,000 2,600 196,000 7,200 13
397,000 3,800 453,000 10,400 7
497,000 5,300 518,000 11,500 1
528,000 5,600 615,000 12,300 0
99,000 800 278,000 2,800 14
500 1,100 142,000 3,100 12
347,000 3,600 461,000 9,600 6
341,000 3,500 382,000 9,800 5
507,000 5,100 590,000 12,000 0
400,000 8,600 517,000 7,000 8

correlation