Complementary and supplementary word problems worksheet. In this range and outliers worksheet, students solve 6 word problems where they examine data then identify outliers, find the upper and lower quartile ranges, find the interquartile range and create boxandwhisker plots. Any data point outside these values is a mild outlier. Likewise, in order to calculate the median, we need to arrange the numbers in ascending order i. The interquartile range is the range between the first and third quarter.
Mean, median, mode, range, and quartiles worksheet answer key everyones a median 1. Iqr worksheet 2 calculate the median, quarter one, quater three, and the. Mean minimum median maximum mode lower quartile q1 range upper quartile q3 mad interquartile range 1. Range 3,100, q 23,850, q 24,750, iqr 900 and mad 588. Do makeup wednesday algebra 1b name quiz 3 on thursday. Iqr also is a good measure of variation in cases of skewed data distribution, and this method of calculating iqr can work for grouped data sets, so long as you use a cumulative frequency distribution to organize your data points. Find the interquartile range of the following data. Read each question carefully before you begin answering it. Find the mode, median, mean, lower quartile, upper quartile, interquartile range, and population standard. If youre seeing this message, it means were having trouble loading external resources on our website. Powerpoint used with year 9 to introduce iqr, uses some ideas from. It is useful because it is less influenced by extreme values as it limits the range to the middle 50% of the. Mean, median, mode, range, and quartiles worksheet answer.
Mean, median, mode, range, and quartiles worksheet answer key. New york state common core math algebra i, module 2, lesson 7 worksheets for algebra i, module 2, lesson 7 pdf. Main idea find the measures of variation of a set of data. You will receive your score and answers at the end. Students interpret the iqr as a description of variability in the data. I start out class with a 15minute minilesson, giving my students some basic examples of what todays lesson will be about. They must also calculate and understand two measures of range, the range and the interquartile range iqr. Calculating the interquartile range iqr free 12 arout1 alevel mechanics chapter 11.
Cumulative frequency finding the median and interquartile range for grouped data. Find the median of 5, 14, 22, 35, 20, 15, 6 and 28. Some of the worksheets for this concept are name date determining interquartile ranges lesson, work from quartiles and, notes unit 8 interquartile range box plots and outliers, center and spread of data, box and whisker plots, mean median mode range and quartiles work answer key, center and spread of data, 10. The range is the difference between the highest value and the lowest value, so. To find the interquartile range, we first need to find each quartile by ordering the numbers. Students construct a box plot based on the 5number summary and calculate the interquartile range iqr. The mode is the easiest measure to find, its the number or.
Find the median, lower quartile, upper quartile and the extremes of each data set. The interquartile range is the difference between the upper quartile and the lower quartile. For middle schoolers learning about box and whisker plots, heres a great worksheet all about finding the interquartile range of a data set. Worksheets are quartiles 1, complete the following questions on a separate of, mean median mode range and quartiles work answer key, center and spread of data, work from quartiles and, chapter 3 descriptive statistics numerical measures, center and spread of data, finding quartiles name. New vocabulary measures of variation range quartile lower quartile upper quartile interquartile range outlier. The following data represent the heights in inches of 14 students in ms. If youre behind a web filter, please make sure that the domains. To find the median, you list the numbers in order from least to greatest, eliminate the lowest and highest numbers, then select the middle number as the median. The lower fence is the lower cutoff point for outliers the upper fence is the upper cutoff point for outliers lower fence q1 1,5iq. Find the mean, median, mode, range, and quartiles for each data set.
Interquartile range iqrq3q1 to calculate iqr, you have to find out q1 and q3. Engage your students by having them read graphs, tables, and raw data and finding the mean, median, mode, range, and interquartile range iqr. In this range and outliers worksheet, students solve 6 word problems where they examine data then identify outliers, find the upper and lower quartile ranges. Displaying top 8 worksheets found for interquartile range. Calculating the interquartile range iqr teaching resources. Translating the word problems in to algebraic expressions. Calculate the range, quartiles, interquartile range, and five number. What is the first step in finding the median for this data set. In order to calculate the iqr, we need to begin by ordering the values of the data set from the least to the greatest.
Finding range, quartiles, and iqr with frequency tables grouped and ungrouped tables. Find the mode, median, mean, lower quartile, upper quartile, interquartile range, and population. Some of the worksheets for this concept are name date determining interquartile ranges lesson, work from quartiles and, notes unit 8 interquartile range box plots and outliers, center and spread of data, box and whisker plots, mean median mode range and quartiles work answer key, center and spread of data, 10 measures of variation. These problems can be solved by hand, and earlier worksheets have the numbers sorted to make finding the median and mode easier. Sum of the angles in a triangle is 180 degree worksheet. First quantile, third quantile and interquantile range. The worksheet is fully differentiated mild, medium spicy, and hot allowing pupils to work at different levels simultaneously. Practice finding the interquartile range iqr of a data set. How to calculate the interquartile range sciencing. Download free worksheets for practicing grade 6 math interquartile range iqr 6. The interquartile range or iqr is the difference between the upper and lower quartiles. This graphing worksheet uses eight sample data sets and asks students to practice finding the interquartile range in each.
This worksheet is designed to replace a lecture on the topics of mean, median, mode, range, quartiles, and the interquartile range. Range the difference between the greatest and least data values. Interquartile range even in the unimodal cases, neither the mean nor the median describes the data adequately. Range 19 7 12 to find the interquartile range, as with finding the median, the data must be arranged in order first. To find the interquartile range iqr, first find the median middle value of the lower and upper half of the data. Complete the following questions on a separate sheet of paper. Please practice handwashing and social distancing, and check out our resources for adapting to these times. When to use five number summaries and iqrs what you should be able to do. Interquartile range examples, solutions, videos, worksheets. Finding interquartile range worksheet onlinemath4all. After solving they will find the correct pattern by shading the answers in a grid. Interquartile range displaying top 8 worksheets found for interquartile range. Interquartile range worksheet teachers pay teachers. Interval frequency 5558 5962 6366 6770 7174 map 4ci a complete the table.
You are now ready to find the interquartile range iqr. Problem worksheets for finding the mean, median, mode and range for sets of mixed sign numbers. Create a boxandwhisker plot for the data set above. If there are an odd number of numbers, remove the median before determining the quartiles. The diagram below represents ordered data separated into quartiles. Calculate which data points are in which quartile range. Add this to the upper quartile and subtract it from the lower quartile. Find the range and the interquartile range for this data set this example was used to find a median in study guide. The interquartile range is a difference between the first and third quartiles. The iqr describes the middle 50% of values when ordered from lowest to highest. Find the 1st, 2nd median and 3rd quartile of the set of numbers. Worksheets are quartiles 1, mean median mode range and quartiles work answer key, name date determining interquartile ranges lesson, inter quartile range outliers, center and spread of data, measures of variability the range inter quartile range, core summarising numerical data the median range iqr, center and spread of data. Pencil, pen, ruler, protractor, pair of compasses and eraser you may use tracing paper if needed guidance 1.
Percentiles and quartiles worksheet complete the following questions on a separate sheet of paper. This worksheet is designed to help pupils revise finding the quartiles and interquartile range of. Interquartile range displaying top 8 worksheets found for this concept some of the worksheets for this concept are name date determining interquartile ranges lesson, work from quartiles and, notes unit 8 interquartile range box plots and outliers, center and spread of data, box and whisker plots, mean median mode range and quartiles work answer key, center and spread. Quartiles and interquartile range worksheet with solutions tes. Deciles are positional measures that divide a set of data into 10 equal parts. You may use a calculator, but you must show your work. Mean mode median range outlier worksheets theworksheets.