Algebra. Quantitative Data in One Variable.

label Algebra
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Apr 28th, 2015

B. Why?

Reading the histogram, there was 1 student who took about 10 minutes and 2 students who took between 30 and 40 minutes to complete the test. The total number of students is 1 + 2 + 1 + 3 + 10 + 12 = 29, so 10% of 29 ~ 3. So, about (3 = 1 + 2 ~) 10% of students took less than 40 minutes to complete the test. 

Apr 28th, 2015

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