How to find the range of a box and whisker plot

Upper half of scores in Physics (in Bold): 30, 45, 68, 70, 78, 83, 85Д§8 and 83 are the third quartiles in Maths and Physics respectively (there is 1 data point both above and below). Outliers are important because they are numbers that are 'outside' of the Box Plots upper and lower fence, though they dont affect or change any other numbers in the Box Plot your instructor will still want you to find them. The Third (Upper) Quartile is the midpoint of the upper half of our data. Lower half of scores in Physics (in Bold): 30, 45, 68, 70, 78, 83, 85Д¤2 and 45 are the first quartiles in Maths and Physics respectively (there is 1 data point both above and below) The First (Lower) Quartile is the midpoint of the lower half of our data. Д¦6 and 70 are the median values in Maths and Physics respectively (there are 3 data points both above and below these values). Step 2: Determine the first, second, and. These will be the ends of the 'whiskers' of our plot. The median is the point at which there are an equal number of data points whose values lie above and below the median value. Step 1: Determine the lowest and highest values of our data set. Now let us find the median, the first (lower) quartile and the third (upper) quartile To understand how a Box and Whisker chart is constructed, we have to first arrange our data in ascending order. Д¬heck out live examples of Box and Whisker Chart in our charts gallery and JSFiddle gallery. The Box and Whisker consists of two partsГўВЂВ”the main body called the Box and the thin vertical lines coming out of the Box called Whiskers. To find out unusual observations/errors in the data setД«ox and whisker plots are also very useful when large numbers of observations are involved and when two or more data sets are being compared.

To know whether a distribution is skewed or not.

For a quick understanding of the distribution of a dataset.

Half of the values lie below it and half above. Median (Q2) It is the mid-point of the dataset. First Quartile (Q1) 25 of the data lies below the First (lower) Quartile. Minimum It is the minimum value in the dataset excluding the outliers. The Box & Whisker chart displays the spread and skewness in a batch of data through its five-number summary: minimum, maximum, median, upper and lower quartiles. A box plot gives a five-number summary of a set of data which is.

How to find the range of a box and whisker plot