Question

Here are ten numbers:

3 7 2 4 7 5 7 18 8
a) Write down the mode.
b) Work out the median.
c) Calculate the mean.
d) What is the range?

Answer 1

Explanation:

a) The mode is 7, because it appears three times, which is more than any other number in the list.

b) To find the median, we need to arrange the numbers in order from smallest to largest:

2 3 4 5 7 7 7 8 18

The median is the middle number, which in this case is 7, since there are an equal number of values on either side of it.

c) To calculate the mean, we add up all the numbers and then divide by the total number of values:

(3 + 7 + 2 + 4 + 7 + 5 + 7 + 18 + 8) / 9 = 61 / 9 ≈ 6.78

So the mean is approximately 6.78.

d) The range is the difference between the largest and smallest numbers in the list:

18 - 2 = 16

So the range is 16.

Answer 2

The numbers are 9 in total

Explanation:

a) Mode 7

7 is the most occuring number.

b) Rearrange the numbers to find median

2, 3, 4, 5, 7, 7, 7, 8, 18

median=7

middle number is the median

c) Mean=2+3+4+5+7+7+7+8+18/9

mean=6.7

d) Range= Highest number - lowest number

18-2=16

I hope this helps a lot!