AJHW抄録（英文）

https://doi.org/10.24552/00002149 ©青森県立保健大学

Evaluation of curriculum
 

Lesson on confidence interval for university students using cards

 

Tatsuya Koyama

Aomori University of Health and Welfare
（Recieved June 24, 2019; Accepted October 30, 2019）

 

ABSTRACT

［Objective］Recently, practice of evidence-based nutrition has been required. Knowledge on inferential statistics is necessary to understand the scientific evidence. This paper reports on the simulation education using cards to understand the confidence interval.
 

［Methods］Lectures on statistics were held in January 2019 for 23 third-year undergraduate students. A total of 18 cards with numbers from 1 to 9 were prepared, and these 18 cards were regarded as a “population”, from which four cards were randomly extracted. The undergraduate students received the explanation that the four cards drawn was considered as a “sample”, randomly selected from the “population”. Mean and 95％ confidence intervals were calculated for each trial. Student conducted these samplings 100 times in turns. A graph of 100 trials of estimated 95％ confidence intervals was shown for the students to understand visually.

 

［Results］Out of 100 trials, 95 trials of estimated 95％ confidence intervals included the population mean, Whereas 5 trials of estimated 95％ confidence intervals did not include it. Showing 100 trials of estimated95％ confidence intervals as a graph would help the students visually understand the above results.

 

［Conclusions］This simulation education could possibly be a learning material that enhances the undergraduate students to understand 95％ confidence interval.

Aomori J. Health Welfare, 1; 29-33: 2019

 

Key words: statistical education, estimation confidence interval