How many days recorded a temperature greater than 30 degrees but less than 40 degrees? What is the most repeated temperature in Philadelphia over the last 14 days?ģ.
What is the maximum temperature recorded?Ģ. Use the stem and leaf plot to answer the following questions:ġ. All temperatures are recorded in degrees Fahrenheit. The stem and leaf plot shows the average temperatures in Philadelphia from the last 14 days. Therefore, 20 students took the math assessment. Looking at the leaves listed for each stem, we can count how many test scores occur in each frequency. To figure out how many students took the math assessment, we need to count how many pieces of data we have in this data set. How many students took the math assessment altogether?
Adding these together, 9 students earned a score of 80% or higher on the math test.ģ. There is 1 leaf shown for a stem of 10, so the test score is 100%. Since there are 3 leaves shown for a stem of 9, there are 3 test scores in the 90s: 90, 95, and 97. Since there are 5 leaves shown for a stem of 8, there are 5 test scores in the 80s: 80, 80, 83, 84, and 85. To answer this question, we need to count how many numbers have a stem of 8, 9, or 10. How many students earned a score of 80% or higher? The lowest leaf with a stem of 6 is 2, so the lowest score in the data set is 62%.Ģ. Each leaf shows the ones place value of each number in the data set. The lowest stem shown is 6, so the lowest test score is in the sixties. Recall that the stem columns show the first digit, or digits, of the data value. The lowest score earned on the assessment is 62%. What was the lowest score earned on the assessment?
#FIND OUTLIERS ON A STEM PLOT HOW TO#
Now that we know how to read stem and leaf plots, let’s see if we can answer a few questions about the data set.ġ. This stem and leaf plot shows student test scores on a math assessment. Let’s look at another stem and leaf plot together. Understanding how to read and interpret stem and leaf plots helps us interpret data. Therefore, 3 family members are in their 40s. For instance, if I asked how many family members are in their 40s, you can see that 3 data values have 4 as their stem. Given this context, we can answer questions about the data set using the stem and leaf plot. Let’s say that in this stem and leaf plot, each number is the age of a family member. We can interpret a stem and leaf plot to answer questions about the data set. Stem and leaf plots are a useful way to organize quantitative data. The data values with 4 in the tens place are 43, 44, and 49. The data values with 3 in the tens place are 31, 35, and 37. The data values with 2 in the tens place are 25 and 28. The data values with 1 in the tens place are 12 and 14. The leaf column shows the ones place for each data value. In the table shown, the stem column shows the tens place for numbers that appear in the data set. Let’s look at an example of a stem and leaf plot together: The left column contains the data set’s stems, and the right column contains its leaves. A stem and leaf plot looks like a table with 2 columns. The stem is the first digit, or digits, of the data value, and the leaf is its last digit.
A stem and leaf plot is a type of graph that displays quantitative data.Įach data point in a stem and leaf plot gets broken down into 2 components: the stem and the leaf. Mathematicians use graphs to illustrate data sets. For instance, class scores on a math test are a data set. First, a data set is a collection of numbers that relate to a specific topic. Hello, and welcome to this video about stem and leaf plots! Today we’ll learn how to read a stem and leaf plot and discuss what sorts of information it’s used to display.īefore we get started, let’s review a few things.
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