Question

The data set gives the number of hours it took each of the 10 students in a cooking class to master a particular technique.

Answer 1

Answer:   The best measure of center for this data set is median , and its value is 4.5 .

Step-by-step explanation:

The given data set : {5, 3, 5, 30, 4, 5, 4, 3, 4, 5}

We can see that it has an outlier (i.e. 30) which is extremely large from all the values.

We know that to measure the center of tendency we measure one of three things arranged in ascending order:

Mode< Median <Mean

But mean gets affected by outlier value.

Then the best measure of center for this data set must be Median.

For this, arrange given data set in order:

{3 ,3 ,4 ,4 ,4 ,5 ,5 ,5 ,5 ,30 }

Since , the number of data values = 10 (even)

Then , Median = Mean of two middle most numbers

$\dfrac{4+5}{2}=4.5$

Hence, the best measure of center for this data set is median , and its value is 4.5 .

Answer 2

4.5 thats the answer. Im just typing so its long enough blah blah blah