Data and Line Plots Flashcards

Grade 4 · Math · Flashcards

Review data vocabulary and line plot skills with these essential study cards.

Flashcards

Data: Information collected about something; can be counts, measurements, or categories
Line plot: A graph using X marks on a number line to show how often each value occurs in a data set
Mode: The value that appears most often; on a line plot, it has the tallest stack of X marks
Range: Greatest value minus least value; measures how spread out the data is
Frequency: How many times a value appears; the number of X marks above a point on the line plot
Cluster: A group of data values that are close together; shown as several X marks bunched in one area
Gap: A value on the number line with no X marks above it; no measurements had that value
Reading totals on a line plot: Multiply each value by how many X marks it has, then add all products together
Line plot with fourths: Number line marks: 0, 1/4, 1/2, 3/4, 1, 1 1/4 ... each X = one measurement at that fractional value
Why use a line plot?: To organize data and quickly see patterns, the most common value, and the spread of measurements
Total from: 2 Xs at 1/4 and 3 Xs at 1/2: 2 × 1/4 + 3 × 1/2 = 2/4 + 6/4 = 8/4 = 2 (total of all measurements)
Outlier: A data value that is much higher or lower than the rest of the data; sits far apart on the line plot