The following Analytic Solver results were generated by a principal component analysis.

a. How many original variables are in the data set?
b. What percent of variance does the third principal component account for?
c. How many principal components need to be retained in order to account for at least 95% of the total variance in the data?

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PC, PC₂ PC3 Variance % 76.2656 13.6728 8.9626 Cumulative 76.2656 89.9384 98.9010 Variance % PC4 PC5 0.8751 0.2239 99.7761 100