SOLUTION: Data Set #1 44, 35, 44, 22, 40, 40, 72, 21, 72, 70 Data Set #2 7.8, 4.9, 4.9, 3.8, 4.4, 7.1, 3.3, 7.6, 4.0, 3.1, 6.0 Find Mean, Median, Mode, Sum of squares, Variance, Stan

Algebra ->  Probability-and-statistics -> SOLUTION: Data Set #1 44, 35, 44, 22, 40, 40, 72, 21, 72, 70 Data Set #2 7.8, 4.9, 4.9, 3.8, 4.4, 7.1, 3.3, 7.6, 4.0, 3.1, 6.0 Find Mean, Median, Mode, Sum of squares, Variance, Stan      Log On


   

Question 83092: Data Set #1
44, 35, 44, 22, 40, 40, 72, 21, 72, 70
Data Set #2
7.8, 4.9, 4.9, 3.8, 4.4, 7.1, 3.3, 7.6, 4.0, 3.1, 6.0
Find Mean, Median, Mode, Sum of squares, Variance, Standard Deviation,
Of Data Set #1 and Data Set #2.
Answer by Mona27(45) About Me  (Show Source):
You can put this solution on YOUR website!
Data set #1:
Mean =
Median is the middle number in the set of data after arranging them:
21, 22, 35, 40, 40, 44, 44, 70, 72, 72
in this case the median is the average of the two middle numbers 40 and 44:
median = %2840%2B44%29%2F2=42
The mode is the most frequent number. In the first set there are 2 such numbers: 40 and 72 so this distribution is said to be bimodal.
Sum of squares is exactly what it sounds like: You square each of the numbers and then add them up.

Variance = Mean of squares - (mean)^2 = 24490%2F10-46%5E2=333
Standard deviation is the square root of the variance = sqrt%28333%29=18.2
The same applies to data set #2. Can you continue from here?