问题1.找出班上15名学生获得的以下分数的方式：
标记：4，6，5，7，9，9，10，4，7，6，5，9，8，7，7。
解决方案：
The mode is the most common number that occurs frequently in the given data.
Here, we can see that 7 occurred most frequently.
Hence, Mode = 7
问题2.从以下数据中找出模式：
125、175、225、125、225、175、325、125、375、225、125
解决方案：
The frequency of given set of observations:
|
Values |
125 | 175 | 225 | 325 | 375 |
|
Frequency |
4 |
2 |
3 |
1 |
1 |
Here the maximum frequency is 4 which is 125.
Hence, Mode = 125
问题3.找到以下系列的模式：
7.5、7.3、7.2、7.2、7.4、7.7、7.7、7.5、7.3、7.2、7.6、7.2
解决方案：
Frequency of the given set of observations:
|
Values |
7.2 |
7.3 | 7.4 | 7.5 | 7.6 | 7.7 |
| Frequency |
4 |
2 |
1 |
2 |
1 |
2 |
Here the maximum frequency is 4 which is 7.2.
Hence, mode = 7.2
问题4.分别找到以下数据的模式：
(i)14、25、14、28、18、17、18、14、23、22、14、18
解决方案：
First arrange the data in the ascending order:
14, 14, 14, 14, 17, 18, 18, 18, 22, 23, 25, 28
Here we can clearly see that 14 occurs 4 times, hence it has the highest frequency.
So, mode = 14
(ii)7、9、12、13、7、12、15、7、12、7、25、18、7
解决方案：
Frequency of the given set of observations:
|
Values |
7 |
9 |
12 |
13 |
15 | 18 | 25 |
|
Frequency |
5 |
1 |
3 |
1 |
1 |
1 |
1 |
Here the maximum frequency is 5 which is 7.
Hence, mode = 7.
问题5.通过调查得出的不同衬衫尺寸的需求如下：
|
Marks |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
|
Number of students |
2 |
2 |
2 |
4 |
2 |
2 |
1 |
找到从调查中观察到的莫代尔衬衫尺寸。
解决方案：
Frequency of the given set of observations:
|
Size: |
38 | 39 | 40 | 41 | 42 | 43 | 44 | Total |
| Number of persons (wearing it) | 26 | 39 | 20 | 15 | 13 |
7 |
5 |
125 |
Here the maximum frequency is 39 which is 39.
Hence, mode = 39.