哪些统计测试可以比较各组的频率?
我正在进行一项分析,其中我想确定构成两个组的特征是否存在显着差异:对儿童犯罪的人以及对成年人犯罪的人 - 小组规模并不相等。
我的数据都是所有频率计数,并且已加起来以创建百分比
- 例如,
有80%的针对儿童犯罪的罪犯是男性20%是女性
75%的罪犯,犯罪的成年人是男性25%,是女性
50%在对儿童犯罪的罪犯中,有20%的人无罪,有30%的罪犯被无罪释放,
有20%的罪犯对成年人犯罪,有60%的人不认罪,
我想知道20%,我想知道:
有没有罪名。对成年人与对儿童犯罪的女性犯罪的女性人数有显着差异?
对针对儿童犯罪的成年人与男性犯罪的男性人数有显着差异吗?
有罪的辩护/无罪辩护/无罪释放/与对儿童犯罪的罪犯与对成年人犯罪的罪犯犯罪的罪犯的数量有显着差异?
那些针对成年人的犯罪与对儿童犯罪的罪行之间的有罪请求 /无罪辩护 /无罪释放的数量是否存在显着差异?
我认为这应该是一项卡方测试 - 但这似乎是为了回答诸如“男性人数与对儿童犯罪的女性人数之间有显着差异?”而不是回答“对儿童犯罪的妇女人数与对成年人犯罪的妇女人数有显着差异?”
另外,在Chi平方测试中,我的“期望值”是否只是我在一个组中观察到的,而“观察到的价值”是我在另一组中观察到的内容?我,我希望小组相同。
我还考虑了一个可以将男性和女性编码为0和1的t检验,但这不会产生标准偏差,因此是不可行的。
我将非常感谢您对此的任何帮助或建议,或者在哪种测试中进行适当的建议,谢谢!
I am running an analysis in which I want identify if there are significant differences in the features that make up two groups: people that commit crimes against children and people that commit crimes against adults – the group sizes are not equal.
My data is all frequency counts, and has been added up to create percentages
For example –
80% of offenders that commit crimes against children are male 20% are female
75% of offenders that commit crimes against adults are male 25% are female
50% of offenders that commit crimes against children plead guilty, 20% plead not guilty, 30% are acquitted
20% of offenders that commit crimes against adults plead guilty, 60% plead not guilty, 20% are acquitted
I want to know:
Is there a significant difference in the number of females that commit crimes against adults vs. females that commit crimes against children?
Is there a significant difference in the number of males that commit crimes against adults vs. males that commit crimes against children?
Is there significant difference in the number of guilty pleas/ non guilty pleas/ acquittals/ from offenders that commit crimes against children vs. offenders that commit crimes against adults?
Is there significant difference in the number of guilty pleas/non-guilty pleas / acquittals between those commit offences against adults vs. those that commit offences against children?
I am thinking it should be a chi-squared test – but this seems to be for answering questions such as ‘is there a significant difference between the number of men vs. the number of women that commit crimes against children?’ rather than answering ‘is there a significant difference in the number of women that commit crimes against children vs. the number of women that commit crimes against adults?’
Also, in a chi squared test, would my ‘expected value’ just be what I observed in one group and my ‘observed value’ be what I observed in the other group? I,e., I expect the groups to be the same.
I also thought about a t-test where male and female could be coded as 0 and 1 but that would give no standard deviations so would not be feasible.
I would greatly appreciate any help or advice with this or on which test would be appropriate, thank you!
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