Math
posted by Anna .
I can't figure out this question in my math book. What would be a reasonable answer???:
Why is it important to measure variability in a data set?
I don't understand my homework,is about round numbers,prime factorizations,and large problems and is to harder to me.
Then post your question's and we'll try to help you understand it.
Well, consider these 2 sets
S=(5,5,5,5)
T=(14,1,2,3)
They both have the same average, 5, but look how much the members of T vary from each other compared with those of S. Just looking at the average is not useful without knowing how much variance there is in a set of data.
Does this help to explain the importance of knowing about variability in data sets?
Respond to this Question
Similar Questions

Math
Which of the following is a prime #? a.2 b.19 c.37 d.51 e.67 I choose 2. But the book answer is 51. The book says:( 2,19,37, and 67 are prime #'s) 3x17=51, so it is not prime. I forgot what prime #'s mean that's why I choose anything 
Math
A positive integer n is defined as a "prime interlude" if n1 and n+1 are both prime numbers. Which of the following is not a "prime interlude? 
Math
Stephen said that the ratio of his mortgage to the sales price of his house is 7 to 6. Is this reasonable? 
Math
Choose the one alternative that best completes the statement or answers the question. Solve the problem. Assume that simple interest is being calculated in each case. Round your answer to the nearest cent. Martin takes out a simpleinterest … 
Math
Hi. I found this question on a Math Counts practice test and it seriously confused me. I've never learned about this, and it would help if someone helped me. Thanks in advance. How many elements are in the intersection of the set of … 
Math
All numbers in our real number system are the product of prime numbers. Complete the following steps for this discussion: 1. List the ages of two people in your life, one older than you and one younger than you. It would be best if … 
Math
I don't understand how to do this problem if someone can please help me to figure it out thank you. A survey about the student government program at a school finds that of 245 students: 218 students like the program 27 students think … 
math help needed bad
I'm really confused on how to answer this question. Can someone help me to figure this out? 
math
There are 5 numbers in a set of data. There are no repeated numbers. Which measure of data must represent a number in the set that is greater than 2 of the numbers in the set and less than 2 of the numbers? 
math
I'm sorry, but I am asking this question again because the response I received was a question that I could not answer  that's why I am asking here. Thank you. If someone asked: what can we learn from analyzing the standard deviation …