How to Choose Effective Statistics for Data Analysis
What kind of statistics are effective for illustrating the main characteristics of a variable's distribution?
A. Univariate analysis
B. Bivariate analysis
C. Multivariate analysis
D. Scatter plots
What central tendency metric is most suitable when a distribution has outliers?
A. Mean
B. Median
C. Mode
Answer:
For illustrating the main characteristics of a variable's distribution, both univariate and bivariate/multivariate analysis can be effective using descriptive statistics such as scatter plots.
Explanation:
Descriptive statistics can help summarize correlations between variables when there are multiple variables involved. When a distribution has outliers, the most appropriate central tendency measure is the median. Outliers can greatly skew the mean, making it less reliable in such cases. The median is a more robust measure of central tendency when outliers are present.