Which of the Following Is True of a Positive Semi-Definite

question 2

Multiple Choice

Which of the following is true of a positive semi-definite variance-covariance matrix

• A)All elements of the matrix are positive
• B)The determinant of the matrix is positive
• C)The matrix is symmetric
• D)The matrix is internally consistent

---

Definitions:

Mean

The average value calculated by adding all numbers in a dataset and dividing by the count of numbers.

Standard Deviation

It quantifies the diversity or spread among a set of numerical values, showing how much they deviate from the average value.

Interquartile Range

The difference between the 75th and 25th percentiles of a data set, measuring the spread of the middle 50% of values.

Mean

The average of a set of numbers, calculated by adding all the numbers together and then dividing by the count of those numbers.