Confidence Intervals and Assumptions of Correlations

Part 1

Frankfort-Nachmias and Leon-Guerrero (2018) noted that the precision of a confidence interval can be enhanced by increasing the sample size. 

Write a 250- to 300-word response to the following:

·        What is the role of sample size in the calculation of confidence intervals?

·        What factors might determine the size of an ideal sample in your dissertation study?

Reference: Frankfort-Nachmias, C., & Leon-Guerrero, A. (2018). Social statistics for a diverse society (8th ed.). Thousand Oaks, CA: SAGE Publications, Inc. 

Part 2

Review the below link:

https://statistics.laerd.com/spss-tutorials/pearsons-product-moment-correlation-using-spss-statistics.php

Write a 250- to 300-word response to the following:

Select one of the assumptions of Correlation. Describe the assumption you selected and how it is tested. What would you do if your data failed the assumption of correlation you selected?

Use APA Guidelines for both parts, In text citations and a reference page.