The Q-Q plot below shows the bootstrap distribution of a trimmed mean with a large bias and a large original sample.What method should be used to generate a 95% bootstrap confidence interval?
A)Bootstrap t
B)Bootstrap percentile
C)Bootstrap bias-corrected accelerated (BCa)interval
D)A or B

Question

The Q-Q plot below shows the bootstrap distribution of a trimmed mean with a large bias and a large original sample.What method should be used to generate a 95% bootstrap confidence interval? 
A)Bootstrap t 
B)Bootstrap percentile 
C)Bootstrap bias-corrected accelerated (BCa)interval 
D)A or B

Quizplus · Accepted Answer

The presence of a large bias suggests that the data may not be normally distributed, making the Bootstrap t interval less reliable. Additionally, the Q-Q plot suggests that the distribution of the bootstrap sample may not match the population distribution, making the Bootstrap percentile interval less reliable. The best option would be to use the bias-corrected accelerated (BCa) interval, which adjusts for bias and skewness in the bootstrap distribution.

The Q-Q Plot Below Shows the Bootstrap Distribution of a Trimmed