2. Describing Data with Tables and Graphs
Histograms
Struggling with Statistics?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Use the frequency histogram below to determine (a) the number of classes and (b) the class width.
A
(a) 5 classes; (b) 2
B
(a) 5 classes; (b) 3
C
(a) 4 classes; (b) 3
D
(a) 14 classes; (b) 2
Verified step by step guidance1
Identify the number of classes by counting the number of bars in the histogram. Each bar represents a class.
Observe the range of each class by looking at the labels on the x-axis. For example, the first class is labeled '0-2'.
Calculate the class width by subtracting the lower boundary of a class from the upper boundary. For instance, for the class '0-2', the class width is 2 - 0 = 2.
Verify the class width by checking other classes. For example, the class '3-5' has a width of 5 - 3 = 2.
Ensure consistency in class width across all classes to confirm the calculation is correct.
Related Videos
Related Practice
