The data set gives the number of hours it took each of the 10 students in a cooking class to master a particular technique.
{5, 3, 5, 30, 4, 5, 4, 3, 4, 5}
the best measure of center for this data set is , and its value is .

For this data set:

Mean:  (3+3+4+4+4+5+5+5+5+30) : 10 = 6.8

Mode : 5

Median : (4+5) : 2 =4.5

In this case, the mean is not the best way to show central tendency.

The median is less affected by outliers and skewed data.

The best measure for the central tendency is the median:  4.5

Step-by-step explanation:

lol

step-by-step explanation:

option a is correct.

step-by-step explanation:

scale factor: it is used to find proportional measurements.

proportions means having the same ratio.

scale factor is the ratio of the model measurement to the actual measurement in a simplest form.

or we can say that the ratio of any two corresponding lengths in two similar geometric figures

if the scale factor is more than 1, then it is an enlargement,

if the scale factor less than 1, then it is a reduction.

given the two geometric figure:

by definition of proportions, we have