Question

Calculate the Mean, Median, Mode and Range. Round to two decimal places when necessary. 4, 15, 3, 8, 4, 7, 15, 5, 17 (a.) Mean = (b.) Median = (c.) Mode = (d.) Range =

Answer 1

The Mean (average):

Add the numbers and divide by the number of numbers.

4 + 15 + 3 + 8 + 4 + 7 + 15 + 5 + 17 = 78

78/9 = 8.67 (rounded two decimal places)

Median: Write the numbers in order to find the median.

3, 4, 4, 5, 7, 8, 15, 15, 17

The median is 7.

Mode: See which numbers are repeating.

3, 4, 4, 5, 7, 8, 15, 15, 17

Mode: 4 and 15 are repeating.

Range: Highest number minus lowest number.

3, 4, 4, 5, 7, 8, 15, 15, 17

17 - 3 = 14

Range = 14

Answer 2

Explanation:

(a) mean:

Ex/no. Of x

78/9

8.6

(b) medain:

write the given numbers (x) in ascending order

If odd: (no. Of x + 1 / 2)th

(N + 1 / 2)th

(9+1 / 2)th

(10/2)th

5th

7

(c) Mode: most frequent number (x)

4, 15

I don't know about range sorry, also recheck the answers!