SUBJECT STATISTICS I
LECTURER Dimas Bagus Wiranatakusuma, Ph.D
TIME 120 Minutes
DAY/DATE Tuesday, 16 April 2019
VENUE Sidang FEB Room
DEPT/PROGRAM Economics - IPIEF TYPE/RULE Closed Book
- Please pray before and after doing your exam!
- Read carefully every single question, and provide your answers on the available sheets!
- You may use dictionary to help answer your exam!
- Any form of cheating is NOT entertained. Therefore, this exam is considered VOIDand will be calculated in your final results.
1.
Please define some of statistical terms below:a. Descriptive Statistics (2,5 marks) b. Inferential Statistics (2,5 marks) c. Sample (2,5 marks)
d. Nominal-Level Data (2,5 marks) e. Population (2,5 marks)
f. Ordinal-Level Data (2,5 marks) g. Interval-Level Data (2,5 marks) h. Ratio-Level Data (2,5 marks) TOTAL 20 MARKS
2.
Mr Fariz is a manager of Maju Mundur Bersama Ltd. He gathered the following information on the number of times a customer visits the store during a month. The responses of customers were:5 3 3 1 4 4 5 6 4 2 6 6 6 7 1
1 14 1 2 4 4 4 5 6 3 5 3 4 5 6
8 4 7 6 5 9 11 3 12 4 7 6 5 15 1
1 10 8 9 2 12
According to data above, please:
a. Organize the data into a frequency distribution! (20 Marks)
MID EXAM, EVEN SEMESTER, 2019/2020 FACULTY OF ECONOMICS AND BUSUNESS
INTERNATIONAL PROGRAM FOR ISLAMIC ECONOMICS AND FINANCE (IPIEF)
UNIVERSITAS MUHAMMADIYAH YOGYAKARTA
b. Please draw the histogram according to frequency distrbution results! (5 Marks) c. Determine the relative frequency distribution “less than” and “more than” ! (10 Marks) d. Calculate the standard deviation of data grouped above! (15 Marks)
e. Compute the skewness by using Pearson’s coeeficient of skewness! (10 Marks) TOTAL 60 MARKS
3.
Please define these terms:a. Experiment (2.5 Marks) b. Outcome (2.5 Marks) c. Probability (2.5 Marks)
d. Mutually Exclusive (2.5 Marks)
e. Mass Rapid Transit Jakarta recently supplied the following information on the operations from Jakarta to Depok
Arrival Frequency
Early 200
On Time 600
Late 150
Cancelled 50
Total 1000
According to above data, what is the probability:
(i) Early or Late (2.5 Marks) (ii) Not Cancelled (2.5 Marks) (iii) Late or On Time (2.5 Marks) (iv) Early or Cancelled (2.5 Marks) TOTAL 20 MARKS