Tables, Graphs, Functions and Sequences
Selected Reading
- Finding patterns in shapes
- Finding the next terms of a geometric sequence with whole numbers
- Finding the next terms of an arithmetic sequence with whole numbers
- Identifying independent and dependent quantities from tables and graphs
- Writing an equation and drawing its graph to model a real-world situation: Basic
- Graphing ordered pairs and writing an equation from a table of values in context
- Writing and evaluating a function that models a real-world situation: Basic
- Finding outputs of a two-step function with decimals that models a real-world situation
- Finding outputs of a one-step function that models a real-world situation
- Interpreting a line graph
- Graphing a line in quadrant 1
- Writing a function rule given a table of ordered pairs: One-step rules
- Function tables with two-step rules
- Graphing whole number functions
- Making a table and plotting points given a unit rate
- Home
Selected Reading
- Who is Who
- Computer Glossary
- HR Interview Questions
- Effective Resume Writing
- Questions and Answers
- UPSC IAS Exams Notes
Interpreting a line graph
Interpreting a pne graph
A pne graph is mostly used to show change over time as a series of data points connected by pne segments on the coordinate plane. The pne graph therefore helps to find the relationship between two data sets, with one data set always being dependent on the other set.
Line graphs are drawn such that the independent data values are on the x-axis and the dependent data values are on the y-axis. Line graphs are used to track changes over short and long periods of time or some independent variable.
Let s define the various parts of a pne graph.
| S.No. | Part & Description |
|---|---|
| 1 | Title The title of the graph tells us what the graph is all about. |
| 2 | Labels The horizontal label across the bottom and the vertical label along the side tells us what kinds of data is being shown. |
| 3 | Scales The horizontal scale across the bottom and the vertical scale along the side tell us how much or how many. |
| 4 | Points The points or dots on the graph represents the (x,y) coordinates or ordered pairs. |
| 5 | Lines The pne segments connecting the points give estimated values between th points. |
Uses of pne graphs
Line graphs are useful in that they show data variables and trends clearly and help us make predictions about the results of data not yet included. They can also be used to show several dependent variables against one independent variable. When comparing data sets, pne graphs are only useful if the x and y axes follow the same scales.
Interpreting pne graphs
We interpret pne graphs by studying and analysing data from pne graphs. Interpreting the pne graph data is
Making sense of the given data
Answering queries about the data
Making predictions on trends,
Finding value of one variable given the value of the other and so on.
To monitor the health of her potato plants, Ms. Fiona recorded the number of potatoes that grow in her garden each year. In which year on the graph did the largest number of potatoes grow in Ms. Fiona s garden?
Solution
It is found from the graph above that the largest number of potatoes grew in the year 2011.
The graph below shows the rainfall over a period of 12 months. Find the month in which there was the second least rainfall.
Solution
From the graph, the month in which there was the second least rainfall was August.