Using their concepts concept, we have that:
a) The mean of the data-set is of 81.6.
b) The median of the data-set is of 80.
<h3>What is the mean?</h3>
The mean of a data-set is given by the <u>sum of all observations in the data-set divided by the number of observations</u>.
In this problem, there are 2 + 8 + 6 + 3 + 9 = 28 observations, hence the mean is:
M = (70 x 2 + 75 x 8 + 80 x 6 + 85 x 3 + 90 x 9)/28 = 81.6.
<h3>What is the median?</h3>
The median of a data-set is the 50th percentile, the value that separates the median in two halfs.
This data-set has an even number of elements, hence the median is the mean of the 14th and 15th elements, as 28/2 = 14. Both elements are 80, hence the median is of 80.
More can be learned about the mean and the median of a data-set brainly.com/question/13202035
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Answer:
8/6 or 1 1/3
Step-by-step explanation:
to add 5/6 and 1/2 you have to find the LCD for both fractions
This would be 6.
So 5/6 would remain the same and 1/2 would become 3/6 because 2*3 = 6 and 1*3=3.
Then you would add them, but keep the denominator and get 8/6 an improper fraction.
If you have to simplify further, then it would be the mixed number 1 2/6, which when simplified further is 1 1/3.
As a decimal it is 1.33333333333333333333333333333333
Answer:
180 boxes
Step-by-step explanation:
The rate of change is 10 boxes per hour, so if you multiply 10 times 18 you will get 180 which is the answer.
56÷2=28
28-1=27
so the smaller number is 27
