Using the concept of standard deviation, it is found that the standard deviation of the data-set will remain the same.
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- The mean of a data-set is given by the <u>sum of it's observations, divided by the number of observations</u>.
- The standard deviation is given by the <u>square root of the sum of the differences squared of each observation and the mean, divided by the one less than the number of values</u>.
- If all observations are increased by a value x, the mean will also increase by x.
- In the standard deviation, at the sum of the differences squared of each observation and the mean, each observation is increased by x, as is the mean, thus, the sum stays the same, while the standard deviation also stays the same.
A similar problem is given at brainly.com/question/18342323
Answer:
Not enough information. (15% Men at family reunion)
Step-by-step explanation:
The question ask what percentage of men with respect to the total number of parents, who attended the family reunion; however, there is no information given on which subset of these people are parents. Therefore we cannot determine the percentage of men with respect to the total number of parents.
If we assume that all attendees of the family reunion are parents, the we can simply write:
3/20 == .15 == 15%
So there are 15% men at the family reunion. Likewise for the women we can say:
17/20 == .85 == 85%
So there are 85% women at the family reunion.
Cheers.
Maybe you should work on starting you're sentences.
Answer: there is no solution
Step-by-step explanation: 1/4z — 13 is not the same as 1/4 + 13
Say z = 1 that would simplify as -12 3/4 = 13 1/4 they are not the same so there is no solution
Answer:
1/4 month per book. other answer options: 0.25 or 25%
Step-by-step explanation:
If he is reading 8 books in two months, each number can be divided by 2 to get his number of books read in one month.
8/2 = 4
2/2 = 1
4 books per 1 month is equivalent to a quarter of a month per book. This means after each month, he will have 4 books read. After two months, he will have his 8 read.