The median.
To find the median using a stem-and-leaf plot, first, organize the data by identifying the stems (the leading digits) and the leaves (the trailing digits). Count the total number of data points to determine the position of the median. If the number of data points is odd, the median is the middle value; if it's even, the median is the average of the two middle values. Locate these values in the plot to find the median.
A Box and Whisker Plot.
Oh, dude, finding the mean, median, mode, and range on a box and whisker plot is like trying to make a sandwich with a hammer. The box and whisker plot already shows you the median (that's the line in the box) and the range (from whisker to whisker). The mean and mode aren't typically shown on a box plot because they're off doing their own thing, not invited to the box and whisker party.
If the data are quantitative they must have a median. If there is no median it is only because the data are qualitative and, in that case, a box and whiskers plot is meaningless.
The median is between Q1 and Q3 and is the same as Q2. These are the same as 25%, 50% and 75% so the median is in the middle of the box in a box and whisker plot.
the second median
To find the lower quartile (Q1) on a dot plot, first, arrange the data points in ascending order. Then, identify the median of the lower half of the data, which includes all values below the overall median. Q1 is the median of this lower half, representing the 25th percentile. If there is an even number of values in the lower half, average the two middle values to determine Q1.
You find the median to find the middle number
You must have made a mistake with one (or both) of them.
the median
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