The dot plot shows the number of books read by students in grades 7 and 8 as part of a summer reading program. Match each phrase to its correct value. answers available:
6 : 5 : 4 : 3 : 1.76 : 1.52 : 1.5 : 1.4 : 1/6 : 2/3

1. the average number of books read by students in grade 7 =

2. the average number of books read by students in grade 8 =

3. the mean absolute deviation for books read by students in grade 7=

4. the mean absolute deviation for books read by students in grade 8 =

5. the difference of the average number of books as a multiple of the mean absolute deviation for grade 8 =
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Maria walks a round trip of 0.75 mile to school every day. how many miles will she walk in 4.5 days

There are two major tests of readiness for college: the act and the sat. act scores are reported on a scale from 1 to 36. the distribution of act scores in recent years has been roughly normal with mean µ = 20.9 and standard deviation s = 4.8. sat scores are reported on a scale from 400 to 1600. sat scores have been roughly normal with mean µ = 1026 and standard deviation s = 209. reports on a student's act or sat usually give the percentile as well as the actual score. the percentile is just the cumulative proportion stated as a percent: the percent of all scores that were lower than this one. tanya scores 1260 on the sat. what is her percentile (± 1)?

Check image and write the letter of the answer