1. For the following data set, representing a sample, Find 

a: the mean, median, mid-range, mode, first quartile, second quartile, third quartile, interquartile range, and draw a box plot. 

b: the variance, and standard deviation, using the shortcut formula, and the range. 

c: the percentile rank of 9, and the value corresponding to the 60th percentile. 

d: the z-score of 6, if the mean is 7 and the standard deviation is 2.2. 

3 6 7 8 9 6 7 6 8 10

2. Consider the following set of data:

 _______ Class Frequency

3.5-6.5 10

6.5-9.5 3

9.5-12.5 8

12.5-15.5 6

15.5-18.5 3

a. Find the mean, modal class, variance and standard deviation.

b. Construct a histogram, frequency polygon, and ogive.

Answer rating: 100% (QA)

a Given Data 3 6 7 8 9 5 7 6 Mean ECJ Median Enthe is Midrange Mo... View the full answer