QUESTION IMAGE
Question
۱۴) نوع متغیرهای زیر را مشخص کنید:
الف) وضعیت آب و هوا (بارانی، آفتابی،...)
ب) اندازه طول بدن یوزپلنگ ایرانی
ج) کیفیت میوه (متوسط، خوب، عالی)
د) اقوام ایرانی
🆕 New Concept Discovered: Classification of Statistical Variables
Distinguishing between qualitative (nominal/ordinal) and quantitative (discrete/continuous) variables.
Step 1: Translate and Understand the Question
The question asks to identify the type of each of the following statistical variables:
- الف) وضعیت آب و هوا (بارانی، آفتابی، ...)
- Translation: Weather status (rainy, sunny, ...)
- ب) اندازه طول بدن یوزپلنگ ایرانی
- Translation: Body length of the Iranian cheetah
- ج) کیفیت میوه (متوسط، خوب، عالی)
- Translation: Fruit quality (medium, good, excellent)
- د) اقوام ایرانی
- Translation: Iranian ethnic groups
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Step 2: Classify Variable (الف) - Weather Status
- Analysis: The values are descriptive categories (rainy, sunny, etc.) rather than numerical measurements. There is no natural mathematical ordering among these categories (e.g., sunny is not "greater" or "higher" than rainy).
- Classification: Qualitative Nominal (کیفی اسمی)
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Step 3: Classify Variable (ب) - Body Length of the Iranian Cheetah
- Analysis: Length is measured using numerical values (e.g., \(120.5\text{ cm}\)). Because it can take any real value within an interval (including decimals), it is a continuous numerical measurement.
- Classification: Quantitative Continuous (کمی پیوسته)
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Step 4: Classify Variable (ج) - Fruit Quality
- Analysis: The values are descriptive categories (medium, good, excellent). However, unlike weather status, these categories have a natural, logical order or ranking (excellent > good > medium).
- Classification: Qualitative Ordinal (کیفی ترتیبی)
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Step 5: Classify Variable (د) - Iranian Ethnic Groups
- Analysis: The values are names of different ethnic groups (e.g., Kurd, Lor, Turk, Baluch). These are non-numerical categories with no inherent mathematical ranking.
- Classification: Qualitative Nominal (کیفی اسمی)
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- الف) وضعیت آب و هوا: کیفی اسمی (Qualitative Nominal)
- ب) اندازه طول بدن یوزپلنگ ایرانی: کمی پیوسته (Quantitative Continuous)
- ج) کیفیت میوه: کیفی ترتیبی (Qualitative Ordinal)
- د) اقوام ایرانی: کیفی اسمی (Qualitative Nominal)