Comparing Data Points on a Line Plot
Comparing Data Points on a Line Plot is a Grade 4 math skill in enVision Mathematics, Chapter 11: Represent and Interpret Data on Line Plots. Students learn to find the sum and difference of specific data points on a line plot using addition and subtraction.
Key Concepts
Property To compare two data points on a line plot, first identify their values on the number line. Then, perform the required operation, such as addition or subtraction, to find their sum or difference. Sum: $Value A + Value B$ Difference: $Value A Value B$.
Examples Find the sum: On a line plot showing the lengths of pencils in inches, the longest pencil is $7\frac{1}{2}$ inches and the shortest is $4\frac{1}{2}$ inches. Their combined length is $7\frac{1}{2} + 4\frac{1}{2} = 12$ inches.
Find the difference: A line plot shows the amount of juice in cups. If the largest cup has $5\frac{1}{2}$ cups and another cup has $3\frac{1}{2}$ cups, the difference is $5\frac{1}{2} 3\frac{1}{2} = 2$ cups.
Common Questions
How do you compare data points on a line plot?
Identify the values of the data points you want to compare on the number line, then add them to find their sum or subtract to find their difference.
How do you find the difference between two values on a line plot?
Subtract the smaller data value from the larger data value to find how much greater one measurement is than another.
What is an example of comparing data on a line plot?
If a line plot shows pencil lengths and the longest is 7 and 1/2 inches and the shortest is 4 and 1/2 inches, their combined length is 12 inches and the difference is 3 inches.
What is a line plot in 4th grade math?
A line plot is a data display that uses dots or Xs above a number line to show how often each value appears in a data set.
What chapter covers line plots in enVision Mathematics Grade 4?
Comparing data points on line plots is covered in Chapter 11: Represent and Interpret Data on Line Plots in enVision Mathematics Grade 4.