Consider the following data points 155, 142, 149, 130, 151, 163, 151, 142, 156,

Question

Consider the following data points 155, 142, 149, 130, 151, 163, 151, 142, 156, 133, 138, 161, 128, 144, 172, 137, 151, 166, 147, 163, 145, 116, 136, 158, 114, 165, 169, 145, 150, 150, 150, 158, 151, 145, 152, 140, 170, 129, 188, 156 a. What is the mean of these data point? b. What is median of these data point. c. What is the standard deviation? d. What is mode of these data points? e. Construct a frequency distribution with eight classes. Begin with a lower class limit 110, and use a class width of 10. f. Draw box plot for the given data. g. Use the result in part e, construct histogram for these data sets. g. Find out outlier for this data. i. Use classes in part e to find mean. j. Use classes in part e to find standard deviation..

Explanation / Answer

1)Answer for the question a:

We have predefined functions in matlab to compute mean of given data points.

function name: mean()

n = [155,142,149,130,151,163,151,142,156,133,138,161,128,144,172,137,151,166,147,163];
meanofDataPoints = mean(n);

Answer is:

2)Answer for question b:

We have predefined functions in matlab to compute mean of given data points.

function name: median()

Answer:

n = [155,142,149,130,151,163,151,142,156,133,138,161,128,144,172,137,151,166,147,163];
medianofDataPoints = median(n)

4)Answer for question c:

We have predefined functions in matlab to compute mean of given data points.

function name: mode()

Answer:

n = [155,142,149,130,151,163,151,142,156,133,138,161,128,144,172,137,151,166,147,163];
modeDataPoints = mode(n)

If the data points are :145,116,136,158,114,165,169,145,150,150,150,158,151,145,152,140,170,129,188,156]

a)mean:
n = [145,116,136,158,114,165,169,145,150,150,150,158,151,145,152,140,170,129,188,156];
meanData = mean(n);

b)median:

n = [145,116,136,158,114,165,169,145,150,150,150,158,151,145,152,140,170,129,188,156];
medianData = median(n);

d)mode:

n = [145,116,136,158,114,165,169,145,150,150,150,158,151,145,152,140,170,129,188,156];
modeData= mode(n);

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