Frequency diagram

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The title says "Frequency Diagrams" and then never defines it in the article's body. Elsewhere on the internet, it's referred to as as frequency box or geometric visualization, while frequency diagrams are line-charts.

el assignment bedan

for the sake of clarity please use "he/she" instead of "they" ... because "they" might refer to "students"

I'm pretty sure that the question being answered is "How to find the probability of having a disease if you tested positive for it." I'm observing people interpreting this to mean "What is the accuracy of the test?" which is not the same thing.

Maybe add a bit to distinguish the two questions?

One of the reasons the results seem counterintuitive is that the "a priori" probability of someone who comes to the clinic is generally much higher than the prevalence of the disease in the general population. About 20% of the general population has diseasitis. Of the population that comes to the clinic (generally because they have symptoms or has been in close contact with someone with diseasitis) that percentage is likely much higher.

Perhaps this can be emphasized by use of bold characters?

Is this the same question as : what is the probablity that the test gives correct results ? We can also ask 3 other questions :

  • What is the probability of a student with a black tongue depressor do not have Diseasitis ?
  • What is the probability of a student witiout a black tongue depressor have Diseasitis ?
  • What is the probability of a student witiout a black tongue depressor do not have Diseasitis ?

Another interesting question to ask is what is the single probablity of the tongue depressor to give accurate results ?

If we know that the tongue depressor has a 5% error on all students, sicks and non sicks, we can predict that the probability of being sick is (another rule here ? or another fashion of using the rule if applicable)

Answer of interest.

Question of interest.

I think I'd find it easier to understand if we were talking about something more concrete, like strep throat.