QUESTION 1
The given data set is
-12 -9 -14 -39 -49 -18, -43
The mean is given by:
[tex]\bar X =\frac{\sum x}{n}[/tex]
[tex]\bar X =\frac{-12+-9+-14+-39+-49+-18+-43}{7}[/tex]
[tex]\bar X =-\frac{184}{7}[/tex]
QUESTION 2
The median is the middle number after arranging the numbers in order.
Let us arrange in ascending order.
-49,-43,39,-18,-14,-12,-9
Hence the median is -18
QUESTION 3
The mode of the data set is the most occurring number.
All the numbers occurs once.
The data set has no mode.
QUESTION 4.
The range is the highest value - the least value.
-9--49=40
The range is 40
NB: The negative values means the object is below the horizon.
