STATISTICS FOR DATA SCIENTISTS WITH R AND PYTHON EXAMINATION TEST 2026 QUESTIONS WITH ANSWERS GRADED A+

STATISTICS FOR DATA SCIENTISTS WITH R
AND PYTHON EXAMINATION TEST 2026
QUESTIONS WITH ANSWERS GRADED A+

◉ Mean. Answer: Average value calculated from data points.


◉ Median. Answer: Middle value in a sorted data set.


◉ Variance. Answer: Measure of data spread around the mean.


◉ Standard Deviation. Answer: Square root of variance, indicates data
dispersion.


◉ Range. Answer: Difference between maximum and minimum values.


◉ Missing Values. Answer: Data points not recorded, handled by
exclusion.


◉ pandas. Answer: Python library for data manipulation and analysis.


◉ NumPy. Answer: Library for numerical computing in Python.

, ◉ Pivot Table. Answer: Summarizes detailed data into descriptive
statistics.


◉ Rolling Method. Answer: Calculates moving statistics over a
specified window.


◉ Moving Average. Answer: Average calculated over a moving window
of data.


◉ T Test. Answer: Statistical test comparing means of two populations.


◉ p-value. Answer: Probability measure to determine statistical
significance.


◉ Confidence Interval. Answer: Range estimating true parameter with
specified confidence.


◉ Skewness. Answer: Measure of asymmetry in a data distribution.


◉ Kurtosis. Answer: Measure of the tailedness of a probability
distribution.


◉ Outliers. Answer: Data points significantly different from others.