Probability of an event HSS.MD.A.1 Grade Practice Test Questions TOC | Lumos Learning

Probability of an event HSS.MD.A.1 Question & Answer Key Resources SBAC Grade 11 Mathematics  Master Course 

SBAC Grade 11 Mathematics  Master Course  Probability of an event

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A group of people volunteered to take a test to find their psychological scores. The histogram below shows the results of the scores. Assume in each category in the histogram the test taker has a score exactly in the middle of the score range. For example, in the range 10-20, the scores were 15. Based on this assumption, what is the average score of the tests?