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Given a dataset [1, 2, 3, 4, 5, 6, 7, 8, 9], how would you use scipy to find the 33rd and 66th percentiles in one call?

hard📝 Application Q9 of 15
SciPy - Statistical Functions (scipy.stats) Basics
Given a dataset [1, 2, 3, 4, 5, 6, 7, 8, 9], how would you use scipy to find the 33rd and 66th percentiles in one call?
AUse stats.quantiles with n=3
BUse stats.quantiles with n=4
CUse stats.scoreatpercentile twice separately
DUse numpy.percentile with [33, 66]
Step-by-Step Solution
Solution:
  1. Step 1: Understand quantiles with n=3

    n=3 divides data into three equal parts, giving 33rd and 66th percentiles.
  2. Step 2: Confirm stats.quantiles usage

    stats.quantiles(data, n=3) returns two cut points at 33% and 66%.
  3. Final Answer:

    Use stats.quantiles with n=3 -> Option A
  4. Quick Check:

    n=3 quantiles = 33rd and 66th percentiles [OK]
Quick Trick: n=3 in quantiles gives tertiles (33%, 66%) [OK]
Common Mistakes:
MISTAKES
  • Using n=4 for 33% and 66%
  • Calling scoreatpercentile twice
  • Confusing numpy and scipy functions

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