Stata box plot is to construct the box and whisker plot for the given statistical records. Statistical data are very large in numbers, so for dividing and conquer the given data, understanding on the given data is necessary, and to find the relationship between the given data, studying stata box plot is more helpful.
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Solving stata box plots:
While studying stata box plots the data is to be detached. The values obtained from the given datas are Q1, Q2, and Q3, these are median values. Studying stata box plot facilitate for proportional learning of a mixture of sections of box plots.
Steps to study stata box plots:
Step 1: The first step is to arrange the given data.
Step 2: The second step is to find the median (Q2) for the given data, if there should be two central numbers means find the mean value, it should be the median, if the count is to be odd means, median is the middle value.
Step 3: Find the values present before Q2 is called as lower quartile, the values present after Q2 is called as upper quartile.
Step 4: Find Q1 and Q3 percentiles (middle values of lower quartile and upper quartile).
Step 5: Find the subordinate and superior values.
Step 6: Mark the positions of Q1 , Q2 and Q3 percentiles in the lattice.
Step 7: Draw a box from lower to upper quartile through Q2
Step 8: Find the inter quartile range.
Step 9: Draw a line from lower to higher series.
Example to study stata box plots:
Draw a stats box plots for the given data
Cricket : 10, 20, 90, 20, -10, 80, -20, 25, 65, 85, 5
Footbal: 20, -30, 50, 60, 90, 10, 70, 65, 35, 55, 95
Solution for learning stata box plots is:
Sort out the data in ascending order.
Cricket : -20, -10, 5, 10, 20, 20, 25, 65, 80, 85, 90
Football: -30, 10, 20, 35, 50, 55, 60, 65, 70, 90, 95
Median:
Median (Cricket) Q2 = 20
Median (Football) Q2 = 55
Lower Median(Q1)
Cricket : -20, -10, 5, 10, 20, 20, 25, 65, 80, 85, 90
Football: -30, 10, 20, 35, 50, 55, 60, 65, 70, 90, 95
Lower numbers are
Cricket : : -20, -10, 5, 10, 20
Football : -30, 10, 20, 35, 50
Middle (Cricket ) Q1= 5
Middle (Football) Q1= 20
Upper Median
Upper numbers are
Cricket : -20, -10, 5, 10, 20, 20, 25, 65, 80, 85, 90
Football: -30, 10, 20, 35, 50, 55, 60, 65, 70, 90, 95
Upper three numbers are
Cricket : 25, 65, 80, 85, 90
Football : 60, 65, 70, 90, 95
Middle (Cricket ) Q3= 80
Middle (Football) Q3 = 70
Maximum
Cricket : -20, -10, 5, 10, 20, 20, 25, 65, 80, 85, 90
Football: -30, 10, 20, 35, 50, 55, 60, 65, 70, 90, 95
Maximum (Cricket) = 90
Maximum (Football) =95
Minimum
Cricket : -20, -10, 5, 10, 20, 20, 25, 65, 80, 85, 90
Football: -30, 10, 20, 35, 50, 55, 60, 65, 70, 90, 95
Minimum (Cricket) = -20
Minimum (Football) =-30
box plot
Study stata box plots
Practice problem for learning stata box plots:
Draw stata box plot for the given set of report
Brand X : 22, 23, 39, 27, 44, 22, 53, 32, 12, 56, 67
Brand Y : 22, 34, 76, 45, 98, 35, 19, 49, 12, 32, 34
