Applied Statistical Methods

APPLIED STATISTICAL
METHODS
STUDENT ID:
[Pick the date]

Question 1
Difference between descriptive statistics and inferential statistics
 Descriptive statistics includes study of the population whereas inferential statistics
includes the study of sample analysis and observation from which the various conclusions
would be drawn about population.
 Descriptive statistics generally analyse and organise the sample data in meaningful ways
whereas inferential statistics compares, test and predicts the population parameters.
 Descriptive statistics merely explains research but does not make any
conclusions/prediction while inferential statistics provides possible conclusions and
prediction about the event.
 Descriptive statistics represent results in form charts, graphs and tabular forms whereas
inferential statistics represent results in the form of probability.
Question 2
Ungrouped frequency distribution of scores
2

Grouped frequency distribution of score
Question 3
Histogram of the grouped frequency for the scores
4-7 8-11 12-15 16-19 20-23 24-27 28-31
0
2
4
6
8
10
12
14
16
18
20 Histogram
Scores
Frequency
Question 4
Option B (25)
Question 5
Mean=∑ f ( y )
n = 3+5+4 +3+2+3
6 = 20
6 =3.33
Median
3