HOW TO READ BOX AND WHISKER PLOT HOW TO
HOW TO READ BOX AND WHISKER PLOT PROFESSIONAL

The 11th score is 360 and the 12th score is 382. In our example, that would be 23 divided by 2 which is 11ВЅ. One way to find the place of the median score is to add 1 to the number of scores and divide by 2.

$how to read box and whisker plot$

51 is the smallest score and 520 is the greatest score.

Here are the actual scores, also known as the raw scores. This is the idea of algebra where a letter stands for an idea. We can write this as follows:ДonвЂ™t be scared off by this way of writing things down. The reports generated by the Literacy and Numeracy for Adults Assessment Tool use box and whisker plots to see whether a group of learners have improved their literacy and numeracy between two or more assessments.ДЄ box and whisker plot is based on a five-number summary of the data as follows.Д®xample from the Assessment Tool Group Progress Report ItвЂ™s also part of Statistics which is all about summarising numbers. ItвЂ™s used to measure change, or in the case of the Assessment tool вЂ“ improvement in assessment scores over time. Many thanks, JanetвЂ¦! WhatвЂ™s a Box and Whisker Plot?ДЄ box and whisker plot is a quick way of examining one or more sets of data on a graph. The following notes come courtesy of Janet Hogan.

HOW TO READ BOX AND WHISKER PLOT PROFESSIONAL

ItвЂ™s part of an embedded numeracy lesson that happens when we teach concepts around diagnostic assessment as part of the NZCALNE (Voc) professional development.

HOW TO READ BOX AND WHISKER PLOT HOW TO

What follows below are notes from some work we did with Department of Corrections staff around how to make sense of this report. And you need to know how the Box and Whisker Plot works if you want to make sense of the data. However,В the report uses something called a Box and Whisker Plot. This report isВ very useful inВ analysing what is going on with yourВ learners over time. One of these is the ability to generate a group progress report. If you are using the TECвЂ™s Literacy and Numeracy for Adults Assessment Tool (LNAAT) itвЂ™s likely that you will have come across the various reporting features available.

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Example from the Assessment Tool Group Progress Report.

How to make sense of the Group Progress Report.

The obvious goal is to raise overall achievement for years 4, 6 and 10, but the goals would need to be much more specific than that after the data is disaggregated.

Overall goals for these groups of students:

Why are year 8 achievement levels higher than the others? Is it a direct result of exceptional teaching? If so, how can we share that capability across the other cohorts?.

Data should be disaggregated to investigate if it is particular groups of students who are represented in the lower levels of achievement.

Top students in year 8 have higher achievement levels than those in year 10.

Each year level has a tail of underachievement which would need to be investigated.

The median for year 10 is well below the National median.

The median for year 8 is above the National median.

The medians for years 4 and 6 are below the National medians.The thin red line represents the national median.

The thick black line on each of the boxes represents the median for that particular data set. The left axis represents scores and the right axis represents the year level. In this graph, achievement levels in reading are being compared.

How to read box and whisker plot