What are the mean,median,mode and range of the data set given the altitude of lakes in feet- 11, -28, -17, -25, -28, -39, -6, and -49
A
Mean=25; median = -26.5; mode= -28; range=40
B
Mean=25 median=-40;mode=-26.5;range= 28
C
Mean=26.5:median -25:mode-28:range= 28
D
Mean=26.5;median=-28;mode=-25;range= 40
My answer is C
Well... your mean is incorrect...
add up all the numbers and divide by 8
then check the means available....
Is it -11 or + 11?
It has to be A or C because of the mode : )
thx
To find the mean, median, mode, and range of a data set, follow these steps:
Mean:
1. Add up all the numbers in the data set.
2. Divide the sum by the total number of values in the data set.
3. The result is the mean.
Median:
1. Arrange the numbers in the data set in ascending order.
2. If the number of values is odd, the median is the middle value.
3. If the number of values is even, take the average of the two middle values.
Mode:
1. Identify the number(s) that appear most frequently in the data set.
2. If there is no number that repeats, there is no mode.
Range:
1. Find the smallest and largest values in the data set.
2. Subtract the smallest value from the largest value.
For the given data set:
-11, -28, -17, -25, -28, -39, -6, -49
Mean:
Calculating the sum: (-11) + (-28) + (-17) + (-25) + (-28) + (-39) + (-6) + (-49) = -203
Dividing by the total number of values (8): -203 / 8 = -25.375
Median:
Arranging the numbers in ascending order: -49, -39, -28, -28, -25, -17, -11, -6
The median is the middle value, which is -25.
Mode:
The number that appears most frequently is -28. Therefore, the mode is -28.
Range:
The smallest value is -49, and the largest value is -6.
Subtracting the smallest value from the largest value: -6 - (-49) = 43
Therefore, the correct answer is:
D) Mean = -25.375, Median = -25, Mode = -28, Range = 43