To find the mean, add up all the values in the data set and divide by the number of values:
Mean = (-12 + -9 + -14 + -39 + -49 + -49 + -18 + -43) / 8
Mean = -233 / 8
Mean = -29.125
To find the median, we need to order the values in the data set from least to greatest, and then pick the middle value:
Ordered data set: -49, -49, -43, -39, -18, -14, -12, -9
There are 8 values in our data set, which is an even number. So, to find the median, we need to take the average of the two middle values: -39 and -18.
Median = (-39 + -18) / 2
Median = -57 / 2
Median = -28.5
To find the mode, we determine which value(s) appear the most times in our data set. The value -49 appears twice, and no other values are repeated.
Mode = -49
To find the range, subtract the lowest value in the data set from the highest value:
Range = -9 - (-49)
Range = 40
So, the mean is -29.125, the median is -28.5, the mode is -49, and the range is 40.
What are the mean, median, mode, and range of the data set:
-12, -9, -14, -39, -49, -49, -18, and -43?
1 answer