Social Music
Math 720
1080 1200
Test Of Statistic for 9
thGrade
1. A Sub District officer wants to find the fact about the dengue epidemic in his region. The population of his research is …
a. dengue epidemic
b. Visitor of the “Puskesmas” in the sub district c. Resident in the sub district.
d. Resident in several Village in the sub district.
2. The result of mathematics test on 14 students are the following : 4, 7, 5, 6, 7, 8, 7, 6, 9, 7, 5, 9, 8, 5. The number of students whose the scores are below the average is ….
a. 4 c. 6
b. 5 d. 7
3. Given data: 6, 7, 8, 9, p, 8, 6, 10. If the mean is 7.75, the value of p is ....
a. 6 c. 8
b. 7 d. 9
4. Mean of the score collected from mathematics examination of 36 students is 6.3. If a student’s score is 7 and it excluded from the calculation, then the mean is ….
a. 6.22 c. 6.28
b. 6.26 d. 6.29
5. The mean of the weight of the entire students in a group that concist of boys and girls is 45 kg. Suppose that the mean for the boys and girls are 50 kg and 42 kg, respectively. The ratio of the number of boys and girls in that group is ….
a. 3 : 5 c. 2 : 3
b. 1 : 3 d. 5 : 3
6. The mathematics score of 10 students are 60, 65, 75, 70, 55, 60, 80, 75, 90, 65. The median of the data is …
a. 60 c. 67.5
b. 65 d. 75
7.
Based on the above table, the median is …. a. 6 c. 6.75
b. 6.5 d. 7
8.
Based on the above data, the mean and mode are respectively ….
a. 6.5 and 7 c. 6.6 and 7
b. 6.5 and 9 d. 6.6 and 11
9. The pie diagram provides information about the favorite subject of 240 students. The number of the children who likes social is ….
a. 30 b. 40 c. 50 d. 60
Nama:
Kelas: IX B No:
Day/date : Saturday/October 29th 2011
Score 4 5 6 7 8 9
Frequency 2 4 13 12 5 4
Score 4 5 6 7 8 9
10. The money owned by a student in a week is presented in the diagram below.
The mean of the student’s money in a week is ….
a. Rp 6,000.00 c. Rp 6,500.00
b. Rp 6,200.00 d. Rp 6,800.00
1. Given mean from the following table is 7,8.
Score 5 6 7 8 9 10
Frequency 3 4 p 7 6 5
Determine the value of p.
2. The age of children is displayed as follow: 9, 10, 12, 14, 12, 13, 11, 12, 9, 14, 12, 10, 13 Determine the Interquartile range of the data !
3. Pie diagram is shown favorite lesson of 96 students to the subject. Determine the number of student that like mathematics !
4. Data body weight of 40 children as follow:
11 23 15 13 18 19 20 23 28 24
20 21 22 14 17 18 19 27 26 13
14 20 19 18 23 14 17 22 25 12
25 22 16 19 14 22 20 21 12 13
