There is one word underlined. From the list of words lettered A to D, choose the word or group of words that is nearest in meaning to the underlined…

Question

There is one word underlined. From the list of words lettered A to D, choose the word or group of words that is nearest in meaning to the underlined word in the sentence. The decision was taken to expedite the approval process.

Answer 1

There is one word underlined. From the list of words lettered A to D, choose the word or group of words that is nearest in meaning to the underlined word in the sentence. The decision was taken to expedite the approval process.

Delay
Accelerate ✓
Obstruct
Slow down

Explanation

Coefficient of determination (R²) measures how well regression line fits data. R² = 1 means perfect fit (all points on line). R² = 0 means line explains nothing. R² = 0.85 means line explains 85% of variation.

Correlation coefficient (r) measures relationship strength and direction. +1 = perfect positive, -1 = perfect negative, 0 = no linear relationship. R² = r².

Correlation does not imply causation. Two variables may correlate because both caused by third factor, or by coincidence. Establishing causation requires more than statistical correlation.