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Statistics

Statistics deals with collecting, organizing, and interpreting numerical data. An important aspect of statistics is the analysis of population characteristics inferred from sampling.

36,756 Questions

What is better a score of 80 in an exam where 70 is the average and 10 its SD standard deviation or a score of 68 in an exam with an average of 62 and SD 3?

"Better" compared to what ? ! ?

If you just want to stand out among the group, look better than the people

around you, and be admired as the least stupid one in the bunch, then maybe

the 68 would be great. You scored two standard deviations above the mean,

and you're officially the One-eyed Man in the Kingdom of the Blind, the Big Fish

in that particular Little Pond, and like Noah himself, perfect in that generation.

You put the 68 in your pocket, and you go out looking for anybody you can find

who scored lower than you did.

But if you want to learn stuff, know stuff, and be able to use the stuff you learn,

then you only want to compare your score to the exam itself, not to anybody else's

performance. A score of 80 is always better than a score of 68, regardless of how

anybody else is doing. You put the 80 in your pocket, you reward yourself with

a chocolate bar for a job well done, and you make up your mind to see what

you can do about those other 20, for the next exam.

How many combinations can you make using the numbers 7 10 39 44 55 12?

26 = 64 combinations, including the null combination - which contains no numbers.

How mathematics can be related to the statistic?

One form of advanced math is the study of series and probablity which is required for use in stastical analysis.

What does mean mode range median mean?

I'm not sure of the other three, but I know that mode means the one that appears the most often, so for example, if you saw this number sequence...
4,4,5,5,6,6,6,3,3,1, 6 would be the mode, simply because it appears the most often.

Median of the set of numbers?

the number that is in the middle , it holds the equal distance from the greatest number and the least number

EX : set: [1,5,2,6,4]

then : [1,2,4,5,6]

then the median is 4 because it is 2 values away form the greatest number which is 6 and the least number 1

What is the definition of elements in regards to math?

Elements can be an element of a set.

Lets say you have a set of numbers like

A{2,3,5,8,45,86,9,1}

B{2,7,0,100}

all those numbers are called elements of that set

2 is an element of set A and B

100 is an element of set B

45 is an element of set A