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Alex Ar [27]
4 years ago
6

The head of the math department is studying the student scores on last year's basic skills test. She has determined the median s

tudent score was 70%. The upper quartile of the scores was 85%. Approximately what percentage of the students who took the test earned scores between 70% and 85%?
Mathematics
1 answer:
avanturin [10]4 years ago
7 0

Answer:

25%

Step-by-step explanation:

The median score of 70% indicates half of the student scored less than 70%.

An upper quartile of 85% means 3/4 of the students scored less than 85% or, stated in another way, 1/4 of the students scored above or equal to 85%.

From sentence 1, 50% of the students scored below 70%.

From sentence 1, 75% of the students scored below 85%.

The percentage that score between 70% and 85% is 75% - 50% = 25%

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Solve the equation for t A=s(t+r)x
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t = (A/sx) - r

Step-by-step explanation:

Solve for t like this:

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In a statistics class, 10 scores were randomly selected with the following results: 74, 73, 77, 77, 71, 68, 65, 77, 67, 66.What
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Answer:

We conclude that the lower limit of a box-and-whiskers display is 65.

We conclude that the upper limit of a box-and-whiskers display is 77.

Step-by-step explanation:

Definition: A box-and-whisker plot or boxplot is a diagram based on the five-number summarytext annotation indicator of a data set.

In a statistics class, 10 scores were randomly selected with the following results: 74, 73, 77, 77, 71, 68, 65, 77, 67, 66.

We conclude that the lower limit of a box-and-whiskers display is 65.

We conclude that the upper limit of a box-and-whiskers display is 77.

3 0
3 years ago
Find the product. 7. $458.29 × 6.3% 8. $280.12 × 7.75%
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Step-by-step explanation:

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Step-by-step explanation:

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3 years ago
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