İST209U
İSTATİSTİK I
2018-2019
Ara Sınav
TB6-1-7
Soru 1
In order to prove that aspirin is the cause of the improvement in health, what needs to be conducted?
Soru 2
Which of the following is included in Data Science?
Soru 3
------- are the entities on which the data are collected.
Which of the following completes the sentence above?
Soru 4
What is the level of measurement of the variable “Gender”?
Soru 5
What is observation?
Soru 6
Which of the following data collection methods is used when “individuals answer the questions printed on a questionnaire paper”?
Soru 7
Soru 8
15, 17, 8, 9, 2, 25, 23, 22, 35, 1, 2, 45, 36, 44,
35, 15, 18, 8, 9, 18
Soru 9
5, 7, 1, 2, 2, 23, 24, 25, 23, 12, 14, 17, 15, 32
Which of the following is the true stem-and-leaf display for the set of observations above?
Soru 10
Soru 11
Soru 12
Soru 13
1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 5, 5, 5, 6, 6, 6, 7, 7, 8, 9
What is the mode of the sample above?
Soru 14
Price
Frequency
80
40
100
60
120
70
130
55
160
35
Total
260
Soru 15
Size
Frequency
110
10
160
22
170
35
220
42
300
16
Total
125
Soru 16
15, 12, 17, 8, 9, 19, 25, 41, 45, 28
What is the arithmetic mean of the data set above?
Soru 17
1, 2, 2, 4, 5, 7, 8, 8, 9, 9
What is the 10% trimmed mean of the sample above?
Soru 18
Why Statistics is a key necessity to humankind today?
Soru 19
What is the first role of statistics?
Soru 20