Lect_2_ Data visualization using Microsoft Excel[64].pptx
1. Data Visualization Using Microsoft Excel
Dr. Jia Uddin
AI and Big Data Department
Endicott College, Woosong University
Daejeon, South Korea
Email: jia.Uddin@wsu.ac.kr
https://sites.google.com/view/drjiauddin/home?authuser=2
2. Common general types of data visualization
Charts (Bar, Line, Pie, Scatter)
Tables
Graphs
Maps
Infographics
Dashboards
17. Measure kurtosis
• How spread the dataset
• +ve kurtosis means too many data in the tails and not enough in
center
• -ve kurtosis means too few data are in the tails
Positive kurtosis indicates a relatively peaked distribution.
Negative kurtosis indicates a relatively flat distribution.
36. Box-plot
• another way of representing a data set graphically
• It is constructed using the quartiles, and gives a good indication of the
spread of the data set and its symmetry
• It is a very useful method for comparing two or more data sets
• The box-plot consists of a scale, a box drawn between the first and
third quartile, the median placed within the box, whiskers on both
sides of the box and outliers (if any)
Make Box and Whisker Plots
https://www.youtube.com/watch?v=mhaGAaL6Abw
37. Constructing a Box-plot
Now we calculate the median, the first quartile and the third
quartile.
For these data, median = 54, the first quartile = 50.5 and the
third quartile = 58.
With this information we can begin to construct the box-plot.
38.
39. The marks from all years are left-skewed, but those from 1996
and 1997 quite markedly so.
1996 had the highest median score but the least spread. The
marks from 1998 vary more than those in 1996 and 1997.
In all years, over 75% of students passed the course.
Comparing Data Sets Using Box and Whisker Plots
https://www.youtube.com/watch?v=U0NZu6f5TMI
https://www.youtube.com/watch?v=e79pyv5mfek
https://www.youtube.com/watch?v=XSSRrVMOqlQ
Min: 0.56, central value at middle of the curve in normal distribution
Gaussian Distribution: Mean 0, Variance 1, Standard Deviation 1
https://www.youtube.com/watch?v=XSSRrVMOqlQ
Min: 0.56, central value at middle of the curve in normal distribution
https://www.youtube.com/watch?v=XSSRrVMOqlQ
Min: 0.56, central value at middle of the curve in normal distribution
https://www.youtube.com/watch?v=XSSRrVMOqlQ
Min: 0.56, central value at middle of the curve in normal distribution
https://www.youtube.com/watch?v=XSSRrVMOqlQ
Min: 0.56, central value at middle of the curve in normal distribution
https://www.youtube.com/watch?v=XSSRrVMOqlQ
Min: 0.56, central value at middle of the curve in normal distribution