Question

please answer me this question.

Answer 1

Heya mate

☺✔☺✔☺✔✨

here isypir answer

mean = sum of observation / no. of observations

63 = sum/7

63×7 = sum

441 = sum

6. no. = 65 70 68 59 73 55

7.no = 441- sum of 6 no.

7.no = 441-390

7.no = 51

Answer 2

let the seventh no. be x
mean = sum of all number/total no.

63 = 65+70+68+59+73+55+x/7

63×7=x+390

441=x+390

441-390=x

51=x