Question

find the mean and range of 7,3,9,8,4,6,1

Answer 1

HERE'S YOU'RE ANSWER

MEAN:
=sum of the given values/no. of given values
=7+3+9+8+4+6+1/7
=38/7
=5.42857142857

RANGE:
=difference of the highest and the lowest values of the data
=9-1
=8

Answer 2

Hii your answer friend
$7 + 3 + 9 + 8 + 4 + 6 + 1 \div 7 \\ \\ 37 + 1 \div 7 \\ = cross \: \: mutiplay \\ 260 \div 7 \\ = 34.1428approx \\ = range \: is \: 9 - 1 \\ highes \: number - lowest \: numbre \\ = 8$