The middle two values would be the 12th and 13th values. If there are an even number of values, then it is the average of the middle two. Recall that the median is the middle value, when the values are placed in order from smallest to largest. The lowest sale price of any card so far is $34 while the highest is $150. The values on the stemplot are all in order from smallest to largest (if you look from top to bottom). (b) What is the lowest sale price? the highest? Since each leaf represents a single data value, we can just count the number of leaves in the stemplot.īased on this, so far they have sold 24 total cards. This is important to consider when answering these questions! (a) How many cards have they sold? (b) What was the lowest sale price? the highest?įrom the key, we can see that the leafs represent the ones digit. Using this, we will answer the following questions about the sale prices so far. They have kept track of all of their sales so far and plotted them on the stemplot below. So let’s suppose that someone has been selling their old baseball card collection online card by card. Using this idea, let’s try to answer some questions. Each leaf represents a single value in the data set. For any stemplot, you will see the leaves on the right hand side of the bar. When we read stemplots, we need to keep this in mind. So we get to 102 points.Stemplots are sometimes called stem and leaf plots because each number in the original data set has been broken up into two pieces: a stem and a leaf. Might have messed- let me do that one more time. Then two 7's, then a 4 then a 2, and then these two charactersĭidn't score anything. Did I do that right? We have two 11's, then a 9,
#Find outliers on a stem plot plus#
Start with the largest, so 20 plus 18 plus 13 plus 11 plusġ1- 13, 11, 11- plus 9 plus 7 plus 7 again plus 4 plus 2. How many scored betweenġ0 and 19 points, and then how many scoredĢ0 points or over. Scored between 0 and 9 points, including 9 points. Was useful about this, is you see how many players Stem-and-leaf plot, we were able to extract outĪll of the number of points that all of the players scored. You have this player that has the tens digit is a 2. And then we have thisĭo orange, this player has 3 in the ones place. The digits start with, or all of the points start withġ, for each of the players. And then, let me see, I'mĪlmost using all the colors, this player had 9įor his ones digit. Had a 2 in his ones digit, so he scored aĭo orange, this player had 4 for his ones digit. Try to do all the colors, this player also hadĪ 0 in his ones digit. So there's, let's see, 1,Ģ, 3, 4, 5, 6, 7 players had 0 as the first digit. You're a little bit more used to understanding it. Write down all of this data in a way that maybe Points to started with a 2, and it was actually 20 points. The players scored points that started with a 0. And usually the leaf willĬontain the rightmost digit, or the ones digit,Ībout this is it gives kind of a distribution In the number of points that each player scored. The leaf contains the smallest digit, or the ones digit, Player, actually scored? And the way to interpretĪ stem-and-leaf plot is the leafs contain-Īt least the way that this statistician used it. To the number of points each student, or each This plot right over here, it seems a little And sometimes it'sĭid the team score? And when you first look at Of points that each of the 12 players on the
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