Question

Can You Check My Work To See I Was Right?

Answer 1

Determine whether each statement is true or false. Explain.

1. The median of a data set is always one of the data values.

2. The number of permutations of two items from a data set is always two times the number of combinations when taking two objects at a time from the same data set. .

3. In large data sets (1,000 or more values), the mean is always one of the data values.

i got this so far...

1.) TRUE a set of numbers (they have to be in order) [1,1,2,3,5,6,6,9,11,11,12] the median is the one in the middle(if it is between two number then find the distance between the 2 numbers)
[1,1,2,3,5,6,6,9,11,11,12] the median is 6,but if I add a 4 [1,1,2,3,4,5,6,6,9,11,11,12] the median would be 5.5 because the middle number is between 5 and 6

2.) FALSE y= x! / (x-y)!

3.) FALSE the mean is all the numbers added together then divided by the number of values there are (even if there are more than 1000 you could have a whole bunch of outliers making it a number you don;t have in your data

Answer 2

as to question 1, you are correct as to 5.5, BUT IS IT PART OF THE SET?

Answer 3

well i have to say it was true or false and explain...

Answer 4

1. FALSE. Consider the set {1,2,3,5}. The median 2.5 is not a member of the set.
2. TRUE. P(n,2) = 2* C(n,2)
(n)! /(n-2)! = 2 * n! /[ (n-2)! 2!]
3. FALSE --> for reason Asker stated