Line, bar and Pie graphs Name Institution 1 Introduction Businesses report research reports regularly Business mostly use bar, line and pie graphs to present data Graphs are visual representation of data Graphs make the information easy to understand Graphs help in incorporating numerical data in reports Makes numerical data easy to read and understand Presentation reviews the bar, line and pie graphs Business present reports on a regular basis. One common feature in business reports is colorful graphics used to convey information in an easy to understand manner. The graphs help to describe something about the business such as describing the sales of a company in the last ten weeks. Numerical data is hard to understand for most people but presenting them in graphs makes it easier to digest and understand. A graph can be defined as a visual representation of data. Representing information and numerical data in graphs makes it easy to understand for people who are not mathematically savvy. Some of the graphs commonly used by businesses and discussed in this presentation are line, bar and pie graphs. 2 Line graph Line graphs represent data that change with time, which helps in showing the manner in which data changes with time. it also helps in comparing two different types of information by showing the manner n which they are similar of differ. The graph above shows the sales per month for various six models for six months. The labels on the vertical axis indicate the number of units sold by various car model manufacturers. The labels on the horizontal axis is the months during which the data was recorded. Therefore, this line graph presents the data for car models sold between January and June. The graph uses line with different colors with each color representing each model. For instance, the red color represents the Toyota Camry car model. The sales for Honda Accord during the month of February is 20,000 units. 3 Bar graphs The bar graph is similar to the line graph only that the bar graph only that this type of graphs uses horizontal or vertical bars that represent a different value. Bar graphs also helps in comparing things between different groups of tracking changes that occur over time. Each bar graph represents a separate quantity. The bar graph measures the units sales (in thousands) of a company between the fiscal years of 2014 to 2018. The labels on the vertical axis indicates that the vertical axis represents the units of sales made by the company. The labels of the horizontal axis shows that the horizontal axis represents the fiscal years during which the data was collected. 4 Pie graph The pie graph is a graphical presentation of data as proportionally sized slices using percentage values. The graph shows the sizes of parts of some total quantity at a specific time. The pie graph above measures the percentages of the Nissan Leaf car model newly registered in various European countries b ...

1. Line, bar and Pie graphs
Name
Institution
1
Introduction
Businesses report research reports regularly
Business mostly use bar, line and pie graphs to present data
Graphs are visual representation of data
Graphs make the information easy to understand
Graphs help in incorporating numerical data in reports
Makes numerical data easy to read and understand
Presentation reviews the bar, line and pie graphs
Business present reports on a regular basis. One common
feature in business reports is colorful graphics used to convey
information in an easy to understand manner. The graphs help to
describe something about the business such as describing the
sales of a company in the last ten weeks. Numerical data is hard
to understand for most people but presenting them in graphs
makes it easier to digest and understand. A graph can be defined
as a visual representation of data. Representing information
and numerical data in graphs makes it easy to understand for

2. people who are not mathematically savvy. Some of the graphs
commonly used by businesses and discussed in this presentation
are line, bar and pie graphs.
2
Line graph
Line graphs represent data that change with time, which helps in
showing the manner in which data changes with time. it also
helps in comparing two different types of information by
showing the manner n which they are similar of differ.
The graph above shows the sales per month for various six
models for six months. The labels on the vertical axis indicate
the number of units sold by various car model manufacturers.
The labels on the horizontal axis is the months during which
the data was recorded. Therefore, this line graph presents the
data for car models sold between January and June. The graph
uses line with different colors with each color representing each
model. For instance, the red color represents the Toyota Camry
car model. The sales for Honda Accord during the month of
February is 20,000 units.
3
Bar graphs
The bar graph is similar to the line graph only that the bar graph
only that this type of graphs uses horizontal or vertical bars that

3. represent a different value. Bar graphs also helps in comparing
things between different groups of tracking changes that occur
over time. Each bar graph represents a separate quantity.
The bar graph measures the units sales (in thousands) of a
company between the fiscal years of 2014 to 2018. The labels
on the vertical axis indicates that the vertical axis represents the
units of sales made by the company. The labels of the horizontal
axis shows that the horizontal axis represents the fiscal years
during which the data was collected.
4
Pie graph
The pie graph is a graphical presentation of data as
proportionally sized slices using percentage values. The graph
shows the sizes of parts of some total quantity at a specific
time. The pie graph above measures the percentages of the
Nissan Leaf car model newly registered in various European
countries between January 2011 to November 2013. Each
country is represented with a different color. One can interpret
the data from the pie graph by looking at the color and
percentage of each slice. For instance, 43% of the vehicles were
sole in Norway while 19% were sole in the UK.
5
How to improve each graph, it at all
All graphs meet the required requirements
Line and bar graphs have independent data horizontal axis
Line and bar graphs have dependent data on vertical axis
All axes well labeled in line and bar graphs
Pie graph well labeled to indicate what it measures

4. Types well differentiated using colors in pie and line graphs
Improve bar graph by adding a title
All the graphs meet the various requirements and I would only
make one change. The graphs meet the require of having well
labeled horizontal and vertical axes with the line and bar graphs
having the independent data on the horizontal axes and the
dependent data on the vertical axes. The labeling of the axis
helps in understanding what the graphs are measuring and
interpret the data. The line and pie graphs differentiates the
different items by using different colors which improves the
understanding of the graphs.
The only thing I would improve in these graphs it to add a title
on the bar graph as it misses one.
6
Appropriate measure(s) for central tendency
Measure of central tendency is a single statistic that describes
of a data set
It describes the central point of the data set
Includes the mode, median, range and mean
Provides single statistic that best represents the entire group
Use the mean for the line graph
Use mean for the bar graph
Use mean and mode for the pie graph
Measures of central tendency refers to a single value that helps
in describing the data by indicating the central position of a
particular set of data. They include the mean, mode, media and

5. the range.
The mean is the average of the data and is found by dividing the
data set by the number of values in the set.
Median is the middle score of the data set after it has been
arranged in the order of their size.
Mode is the most frequent data in the data set.
I would use the mean for the line graph. The mean can help to
calculate the average cars sold per month or the average number
of cars for all types for the six months.
I would use the mean and range for the bar graph. The mean
would help in determining the average number cars sold during
the five fiscal years.
I would use the mean and mode for the pie graph. The mean
would help to calculate the average number of vehicles sold in
the European countries. The mode would help in determining
the country in which the highest number of cars were sold.
7
Measures of dispersion
Measures of dispersion measure the spread of data set
Measure extent to which data scatter about the average
Extent to which the data set differ
Include range, standard deviation, variance, coefficient of
dispersion
Use range for line graph for each car model
Use range for bar graph for the unit sales
Use range for pie graphs for the countries
Measures of dispersion measures the extent to which the
quantities of the items differ or the degree of diversity.
Dispersion helps in describing the spread of a set of data. They

6. measure the variation of of the items among themselves and
around the average. The higher the difference between the
values , the higher the dispersion. Dispersion also helps in
comparing two or more data series. The various measures of
dispersion include the range, quartile deviation, mean deviation,
variance and coefficient of variation.
The three graphs above will apply the range. The range is the
difference between the largest and the smallest value. The range
in the line graph will help in determining the highest and the
lowest sales made for each car model during the period. The
range will help to determine the highest and the lowest sales
units during the period for the bar graph. It will help to
determine the difference between the country with the highest
registrations and the lowest among the countries.
8
References
Bar graph-
https://www.statista.com/statistics/267274/worldwide-vehicle-
sales-of-toyota-since-2007/
Line graph-https://www.thetruthaboutcars.com/2010/07/sales-
chart-the-big-six-midsize-sedans-in-2010/
Pie graph- https://insideevs.com/insideevs-pie-charts-
worldwide-nissan-leaf-sales-since-december-2010-launch/