You have a mean score of 84 after taking five 100-point tests. What do you need to score on the sixth 100-point test to have a m
2 answers:
The mean of n numbers is the sum of the numbers divided by n.
You have a mean score of 84 after taking 5 tests. Let x be the sum of scores.
You scored a total of 420 points on five tests.
You need to have a mean score of 85 after taking 6 tests. Let y be the score you need to obtain. Your total score on 6 tests is 420+y.
You need to score 90 points on the sixth test.
You have a mean score of 84 after taking 5 tests. Let x be the sum of scores.
You scored a total of 420 points on five tests.
You need to have a mean score of 85 after taking 6 tests. Let y be the score you need to obtain. Your total score on 6 tests is 420+y.
You need to score 90 points on the sixth test.
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Answer:
The maximum is :
Now we can calculate the median since the sample size os n =7 the median would be the middle value at the position 4 from the dataset ordered and we got:
Now we can find the quartile 1 we analyze the first 4 values 78, 80,80, 84 and the first quartile would be:
Now we can find the quartile 3 we analyze the last 4 values 84,87, 91, 95 and the third quartile would be:
And finally the 5 number summary would be:
Step-by-step explanation:
We have the following data given:
78, 84, 87, 80, 91, 95, and 80.
The first step is order the dataset on increasing way and we got:
78, 80,80, 84,87, 91, 95
We can begin finding the minimum value and for this case is:
The maximum is :
Now we can calculate the median since the sample size os n =7 the median would be the middle value at the position 4 from the dataset ordered and we got:
Now we can find the quartile 1 we analyze the first 4 values 78, 80,80, 84 and the first quartile would be:
Now we can find the quartile 3 we analyze the last 4 values 84,87, 91, 95 and the third quartile would be:
And finally the 5 number summary would be: