Answer:
a. Calculate the prevalence rate of autism for these children for the two age categories.
- 3-5: prevalence rate = 0.55%
- 6-10: prevalence rate = 0.31%
b. Convert the prevalence rate to a rate per 1,000
- 3-5: prevalence rate = 5.5 per thousand
- 6-10: prevalence rate = 3.1 pér thousand
Step-by-step explanation:
Generally prevalence is calculated using the following formula:
(number of people with autism / number of people measured) x 100%
age category
3-5: prevalence rate = (19/3,479) x 100% = 0.55%
6-10: prevalence rate = (17/5,417) x 100% = 0.31%
if you want to convert to a rate per 1,000, allyou need to do is multiply by 1,000 instead of 100
3-5: prevalence rate = (19/3,479) x 1,000 = 5.5
6-10: prevalence rate = (17/5,417) x 1,000 = 3.1
