Question

Need help with some portfolio question 30 point!

Answer 1

3) Data : 15,16,17,23,11,19,20,15,18,22,15,19

$Mean = \frac{sum of the data}{number of data}\\\\ Mean = \frac{15 + 16 + 17+ 23 + 11 + 19 + 20 + 15 + 18 + 22 + 15 + 19 }{12}\\\\ Mean = \frac{210}{12}\\\\ Mean = 17.5$

4) Mode of the data : The number which is repeated maximum number of time

Data : 15,16,17,23,11,19,20,15,18,22,15,19

From the above data we can see that 15 is repeated maximum number of times

So mode = 15

5) Data : 15,16,17,23,11,19,20,15,18,22,15

For median arrange all the data either from least to greatest or greatest to least

Data from least to greatest : 11, 15,15,15, 16,17,18,19,20,22,23

Number of data = 11

So middle number will be the median

Median = 17

6) Data : 15,16,17,23,11,19,20,15,18,22,15

The first quartile is defined as the middle number between the smallest number and the median of the data set.

Data arranged in lowest to greatest : 11, 15,15,15, 16,17,18,19,20,22,23

For 1st quartile, consider the data as 11, 15,15,15, 16

Middle number = first quartile = 15

Answer 2

3. 17.5
4. 15
5. 17
6. 15