Question
If rxy = 0.75, then correlation coefficient between u =
1.5X and v = 2Y is:Solution
r is not affected by change of scale.
Which of the following best explains the role of an independent variable in data analysis?
A company is analyzing customer feedback to classify it into two groups: "Positive" and "Negative." What type of data and analysis is being employed?
In descriptive statistics, what is the main advantage of using the median over the mean as a measure of central tendency in data analysis?
In stratified sampling, how are the population groups divided?
Which of the following Software Development Life Cycle (SDLC) models is best suited for projects where the requirements are unclear or evolving rapidly?
Which OOP concept ensures that the internal details of an object are hidden from the outside world, providing a clear interface for interaction?
Which of the following methods is most commonly used for ensuring that time series data is stationary?
In healthcare, how can trend analysis most effectively enhance patient care?
In SQL, which type of join returns all records from the left table and the matched records from the right table, and fills in NULL values for non-matchi...
How can selection bias be minimized in a survey of employee job satisfaction?
