Assignment 1 LO2W - how to solve it PDF

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Assignment 1 : 1) Read the abstract of the article assigned to your group and answer the following questions. a) what is the independent and dependent variable(s) that you can determined from the study? b) what is the sample size and state the population of the study? c) discuss on the finding(s) of the study.

2) The mass in kilograms, correct to the nearest one-tenth of a kilogram, of 60 bars of metal are as shown. Form a frequency distribution of about 8 classes for this data with the lower class boundary of the first class is 39.3. 39.8

40.3

40.6

40.0

39.6

39.6

40.2

40.3

40.4

39.8

40.2

40.3

39.9

39.9

40.0

40.1

40.0

40.1

40.1

40.2

39.7

40.4

39.9

40.1

39.9

39.5

40.0

39.8

39.5

39.9

40.1

40.0

39.7

40.4

39.3

40.7

39.9

40.2

39.9

40.0

40.1

39.7

40.5

40.5

39.9

40.8

40.0

40.2

40.0

39.9

39.8

39.7

39.5

40.1

40.2

40.6

40.1

39.7

40.2

40.3

From the frequency distribution, draw a) the histogram

b) a frequency polygon

c) an ogive.

3) The following are 2 sets of data each with a sample of size n=7

Set 1 :

10

2

3

2

4

2

5

Set 2 :

20

12

13

12

14

12

15

a) b) c) d)

For each set, compute the mean, median and mode. Compare your result and summarize your findings. For each set, compute the range, variance and standard deviation and coefficient of variation. What can you generalized about the properties of central tendency, variation and shapes.

GROUP 1 : Chik Nur Aryda & Muhammad

GROUP 2: Rizaludin, Muhammad Kamil & Mohd Afiq

GROUP 3: Kamal Faiz, Hakim & Ahmad Farhie...