BMT P.3 : ESSAY FOR GRAPH

2.1 : PICTOGRAPH

For me, pictograph is like a drawing, pictorial drawing. It is easy to construct it, as with data given, pictograph can be done by using picture symbols to convey the meaning of statistical information. Despite that, Pictographs should be used carefully because the graphs may misrepresent the data. This could be happen if we accidently or wrongly draw it. However, pictograph really an interesting graph.

2.2 : PIE CHART

What I understand, Pie Chart is a circle that consist 360 celsius. In that a circle, it consist many dividing of one circle. It’s like a cake that divide for all person that want that cake. The cirle dividing into sectors proportional in angle and area to the relative size of the quantities represented. Different colour used in pie chart can show comparison an trends. Pie chart made me easily to recognize and identify the percentage.

2.3 : LINE PLOTS

Based on my understanding, Line Plots is a graph showing the frequency of data using a number line. A line plot, sometimes called a dot plot, helps us get a better understanding of a small number of observations. A line represents the variable you are interested in and the values of the variable are labels on the line. Each observation is marked as a point above the line.

2.4 : SCATTER PLOTS

Besides known as scattergram, Scatter Plot also called as scatter diagram. It is a basic graphic tool that illustrates the relationship between two variables. The dots on the scatter plot represent data points.

Scatter diagrams are used with variable data to study possible relationships between two different variables. Even though a scatter plot depicts a relationship between variables, it does not indicate a cause and effect relationship. Using Scatter plots is to determine what happens to one variable when another variable changes value.

2.5 : BAR GRAPH

Bar Graph can either be horizontal or vertical. Also, different groups can be indicated using different colored bars, or bars with different patterns. The height or length of the bars indicates its value.

The bars must have same width (equal intervals). In addition, the equal intervals should shown on one of the axes and the frequency of the data in each interval should be represented by the height or length of the bar.

2.6 : HISTOGRAM

What I understand about Histogram is, it is a way of displaying numeric data using horizontal or vertical bars so that the height or the length of the bars indicates the frequency.

Besides that, a Histogram also is a bar graph that shows us how many data values fall into a certain interval. The number of data items in an interval called as frequency. The width of the bar represents the interval, while the height indicates the number of data items in that interval.