Statistics 简明教程
Statistics - Frequency Distribution
频率分布是一个表，显示样本中各种结果的频率。表中的每一项包含特定组或区间内值出现的频率或计数，并且通过这种方式，表总结了样本中值的分布。
Frequency distribution is a table that displays the frequency of various outcomes in a sample. Each entry in the table contains the frequency or count of the occurrences of values within a particular group or interval, and in this way, the table summarizes the distribution of values in the sample.
Example
Problem Statement:
Problem Statement:
在 Maple 大道上进行了一项调查，以构建频率分布表。在 20 户家庭中，人们被问及有多少辆车登记在他们的家庭名下。结果记录如下：
Constructing a frequency distribution table of a survey was taken on Maple Avenue. In each of 20 homes, people were asked how many cars were registered to their households. The results were recorded as follows:
1 |
2 |
1 |
0 |
3 |
4 |
0 |
1 |
1 |
1 |
2 |
2 |
3 |
2 |
3 |
2 |
1 |
4 |
0 |
0 |
Solution:
Solution:
为将此数据显示在频率分布表中需要遵循的步骤。
Steps to be followed for present this data in a frequency distribution table.
为此练习的频率分布表应如下所示：
Your frequency distribution table for this exercise should look like this:
Frequency table for the number of cars registered in each household |
Number of cars (x) |
Tally |
Frequency (f) |
0 |
${\lvert\lvert\lvert\lvert}$ |
4 |
1 |
${\require{cancel} \cancel{\lvert\lvert\lvert\lvert} \lvert}$ |
6 |
2 |
${\cancel{\lvert\lvert\lvert\lvert}}$ |
5 |
3 |
${\lvert\lvert\lvert}$ |
3 |
4 |
${\lvert\lvert}$ |
3 |
通过快速查看此频率分布表，我们可以看到在接受调查的 20 户家庭中，有 4 户没有汽车，有 6 户有一辆汽车。
By looking at this frequency distribution table quickly, we can see that out of 20 households surveyed, 4 households had no cars, 6 households had 1 car.