Question

The following 13 real estate prices (in dollars) represent the sales prices for a city in the month of June: 389,950; 230,500; 158,000; 479,000; 639,000; 114,950; 5,500,000; 387,000; 659,000; 529,000; 575,000; 488,800; 1,095,000

Answer 1

... I think i know it but needs a great effort