[Solved] What will be the variance value returned by scipy.stats.describe for the array [1, 2, 3, 4, 5]?from scipy.stats import describe arr = [1, 2, 3, 4, 5] stats = describe(arr) print(round(stats.... | SciPy

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What will be the variance value returned by scipy.stats.describe for the array [1, 2, 3, 4, 5]?

from scipy.stats import describe
arr = [1, 2, 3, 4, 5]
stats = describe(arr)
print(round(stats.variance, 2))

A3.0

B2.0

C2.3

D2.5

Step-by-Step Solution

Solution:

Step 1: Calculate variance manually
Mean is 3. Variance = sum((x - mean)^2) / (n - 1) = ((1-3)^2 + (2-3)^2 + (3-3)^2 + (4-3)^2 + (5-3)^2) / 4 = (4 + 1 + 0 + 1 + 4) / 4 = 10 / 4 = 2.5.
Step 2: Confirm output matches calculation
The printed variance rounded to 2 decimals is 2.5.
Final Answer:
2.5 -> Option D
Quick Check:
Variance calculation = 2.5 [OK]

Quick Trick: Variance divides by (n-1) for sample variance [OK]

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What will be the variance value returned by scipy.stats.describe for the array [1, 2, 3, 4, 5]?