51.) The minimum number of a given data is the data value that is less than or equal to all other values in our set of data.
If we were to order all of our data in ascending order, then the minimum would be the first number on our list.
Although the minimum value could be repeated in our data set, by definition this is a unique number. There cannot be two minima because one of these values must be less than the other.
Therefore, in the given set of data: 6, 6, 6, 7, 8, 9, 9, 10, 11, 12, 12, 13, 14, 15, 18
The minimum number is 6.
Therefore, the answer is CHOICE D : 6
52.) For us to be able to determine the 1st quartile, let's first determine the median of the given set of data.
6, 6, 6, 7, 8, 9, 9, 10, 11, 12, 12, 13, 14, 15, 18
It appears that the median is 10.
The first quartile is the middle number between the first data and the median.
We get,
6, 6, 6, 7, 8, 9, 9, 10, 11, 12, 12, 13, 14, 15, 18
The middle data is 7 and 8, let's deter