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Zorluk: OrtaDescriptive Statistics Interpretation

The table below provides operational performance metrics for 10 electric vehicle (EV) charging hubs operated by a regional clean energy authority during the second quarter of 2026:

Hub IDRegionFast ChargersDaily Utilization Rate (%)Average Session Duration (min)
H-101North1272%28.5
H-102Metro1681%42.0
H-103South858%35.0
H-104Metro1068%31.0
H-105Metro1488%46.5
H-106West662%22.0
H-107Metro2075%38.0
H-108North1070%44.0
H-109Metro874%34.0
H-110Metro1276%52.0

What is the median Average Session Duration, in minutes, for the subset of charging hubs with a Daily Utilization Rate exceeding 71%?

  1. A
    38.0
  2. 40.0Cevap
  3. C
    42.0
  4. D
    42.25
  5. E
    40.17

Cevap

40.0 minutes
Filtering the table for hubs with a Daily Utilization Rate strictly greater than 71% yields exactly 6 hubs: H-101 (28.5 min), H-102 (42.0 min), H-105 (46.5 min), H-107 (38.0 min), H-109 (34.0 min), and H-110 (52.0 min). Arranging these 6 duration values in ascending order gives: 28.5, 34.0, 38.0, 42.0, 46.5, 52.0. Because the dataset contains an even number of values (6), the median is calculated by averaging the middle two values: (38.0 + 42.0) / 2 = 40.0 minutes.

Adım Adım Çözüm

1
Filter the table rows by the condition: Daily Utilization Rate > 71%.
Six hubs meet the threshold: H-101 (72%), H-102 (81%), H-105 (88%), H-107 (75%), H-109 (74%), and H-110 (76%).
Filtering isolates the relevant subset of hubs specified in the question stem.
2
Extract and order the Average Session Duration values for these 6 hubs in ascending numerical order.
Ordered values: 28.5, 34.0, 38.0, 42.0, 46.5, 52.0.
To determine a median, the data points must be arranged sequentially.
3
Calculate the median for an even dataset size (N=6N = 6).
Median = 38.0+42.02=40.0\frac{38.0 + 42.0}{2} = 40.0 minutes.
When NN is even, the median is the arithmetic mean of the N2\frac{N}{2}-th element (3rd element = 38.0) and the (N2+1)(\frac{N}{2} + 1)-th element (4th element = 42.0).

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Descriptive Statistics Interpretation
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Descriptive Statistics Interpretation

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