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4 years ago

What does SIR measure, and why is it used with median?

1 answer:

Volgvan4 years ago

5 0

Important frequency measures in cohort studies are incidence and mortality. Important effect measures such as the relative risk (RR), hazard ratio (HR), standardized incidence ratio (SIR), standardized mortality ratio (SMR), and odds ratio (OR) can also be calculated. In case-control or cross-sectional studies, the OR can be calculated as an effect measure. In cross-sectional studies, prevalence is the most important frequency measure. The interpretation of different frequency measures and effect measures will be discussed.

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Please help me solve all these problems 1-9 thanks in advanced

Elodia [21]

1) 50:1
2) 50:1
3) 49:1
4) 16:1
5) 30:1

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3 years ago

The church’s goal for the fundraiser was $18,000. They exceeded their goal by 8%. How much money did they raise?

kifflom [539]

Answer:

19440

Step-by-step explanation:

18000 x 0.08 = 1440

1440 + 18000 = 19440

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3 years ago

A number is increased 20%.By what percent the new number is decreased so that the number restores the original value?

Molodets [167]

Answer:

You have to give the number by which the 20% is increased in order to cross multiply and divide by a hundred to find the missing % of the decrease. Otherwise, you would simply subtract 20% from 100%, which seems unlikely to be the answer. We need more information.

Step-by-step explanation:

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3 years ago

Write an equation for the

Travka [436]

Answer:

See below

Step-by-step explanation:

For the model function $f(x)=a|x-h|+k$ , $(h,k)$ is the vertex, and $a$ is the horizontal growth or shrink factor.

We know that our vertex is $(-1.5,0)$ from our graph, so we'll need to determine the value of $a$ by using one of the points on the graph:

$f(x)=a|x-h|+k\\\\f(x)=a|x-(-1.5)|+0\\\\f(x)=a|x+1.5|\\\\f(0)=a|0+1.5|\\\\3=a|1.5|\\\\3=1.5a\\\\2=a$

Thus, our equation for the given graph is $f(x)=2|x+1.5|$ .

The domain of a function is the set of all existing real x-values, thus, our domain for the given function is $(-\infty,\infty)$ , or all real x-values.

The range of a function is the set of all existing real y-values, thus, our range for the given function is $[-1,\infty)$ , or all real y-values starting with y=-1 which is included.

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3 years ago

How do I graph equations with different slopes

CaHeK987 [17]

In the equation mx+b, change m, since the variable m represents the slope of the line.

4 0

4 years ago

Read 2 more answers