Please help me with the questions! I only get two attempts so if you are not sure please let someone else answer these questions. I will rate ASAP! 1. Select all of the scenarios below that would best be
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
Please help me with the questions! I only get two attempts so if you are not sure please let someone else answer these questions. I will rate ASAP!
1. Select all of the scenarios below that would best be described by a Poisson distribution.
A. The number of heads that appear when a coin is flipped 100 times.
B. The test scores on the final exam of Intermediate biostatistics.
C. The time it takes for a marathoners to finish a race.
D. The number of cases of strep throat at a particular school over the course of 1 year.
2. The
A. The variance of the same Poisson random variable
B. The inverse of the variance of the same Poisson random variable
C. Cannot be calculated
D. Always large
3. A Poisson random variable can be described using 1 parameter
A. True
B. False
4. When deciding if the distribution of a binomial random variable can be approximated using the Poisson Distribution, all of the following must be true EXCEPT
A. n is large
B. p is small
C. np ≈ np (1 - p)
D. We are modeling incidence of disease
5. If X denotes the number of events over T person years is Poisson-distributed with parameter µ, what is the unbiased estimate for λ?
A. X/T
B. X
C. ∑xi/n
D. T/X
6. The standardized morbidity ratio (SMR) assesses
A. The relative risk of the general population to the study population.
B. The relative risk of the study population relative to the general population.
C. The rate at which people in the study have an
D. The rate at which people in the general population have an event
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