Chapter 23 Graphical Representation of Statistical Data
RD SharmaSolutions for Class 9 Maths Chapter 23 Graphical Representation of Statistical Data
A chart is a graphical representation of data, in which "the data is represented by symbols, such as bars in a bar chart, lines in a line chart, or slices in a pie chart". A data chart is a type of diagram or graph that organizes and represents a set of numerical or qualitative data. The graphical representation is a better way to analyze any numerical data. A graph is a type of chart, which the statistical data are represented (In the form of lines or curves). Graphs help us to understand the relationship between variables and measure the position or values of one variable when absolute value changes the other variable. The Chapter has topics like graphical representation of data, bar graph, histogram and method of constructing a frequency polygon.