Interpreting Data



Interpreting Data

Question 01

In Statistics, the box plot is an effective tool that helps to represent the different groups of numerical information in quartiles form. This is effectual for understanding the different groups in graphical approach. The vertical extending line in box plots is representing the inconsistency of outside 25th and 75th quartiles. In the above diagram, the modified Frenso test scores of EBP has categorized the three different samples according to their position (i.e. student faculty) (McGill,et.al, 1978). The sample sizes are different such as novice students are 31, trained students are 50 and expert students are 27. The first box plot has an interquartile range between 60 to 120, and the median frenso test value is approximately 90. At trained level, the box plot demonstrates that students has scored in the frenso test ranging from approximately 100 to 150, with the median value at almost 120. The expert faculty have the highest capacity of obtaining the maximum marks. Greater variability is noted in expert scores as the box plot has covered 100 to 200 ranges. Highest outliers also observed in expert student's scores (Rohlf & Sokal, 1995). Further the minimum frenso test scores of novice students almost lie within the range from 65 - 125. Similarly, the minimum and maximum scores of trained students and expert faculty are almost 85 - 145 and 100 - 180 respectively.

Question 02

Solution

Z < 2.85

This value has found by using the Normal Standard z table.

= 0.9978

= 99.78% observations

Z > -1.66

This value has found by using the Normal Standard z table.

=1 - 0.0458

= 0.9515

= 95.15% observations

-1.66 < Z < 2.85

This can be solve by using Standard normal distribution formula

= x - µ/o

= -1.66 - µ/ o < Z < 2.85-µ/o



= ...