# A graph that displays data that changes continuously over periods of time is

(a) bar graph

(b) pie chart

(c) histogram

(d) line graph

**Solution:**

A graph that displays data that changes continuously over periods of time is called a line graph.

A __line graph__ represents continuous change in data. An example of a line chart is the graph of the __equation__ y = 2x. Whatever value x will assume, y will be twice the value of x.

In other graphs like bar chart, pie chart and histogram the variable assume discrete values.

**✦ Try This: **____________ is a form of representation like the bar graph, but it is used for continuous class intervals: (a) scatter graph, (b) pie chart, (c) histogram, (d) line graph

The correct option is (c) i.e. Histogram.

Histogram is like a bar chart with no gaps between the bars to depict the continuity of the class intervals

**☛ Also Check:** NCERT Solutions for Class 8 Maths Chapter 15

**NCERT Exemplar Class 8 Maths Chapter 12 Problem 2**

## A graph that displays data that changes continuously over periods of time is (a) bar graph, (b) pie chart, (c) histogram, (d) line graph

**Summary:**

A graph that displays data that changes continuously over periods of time is called a __line graph.__

**☛ Related Questions:**

visual curriculum