Levels of Measurement PDF

# Levels of Measurement - understand in simplest terms ## Data - **Qualitative:** "It was great fun" - **Quantitative:** - **Discrete:** 5 - **Continuous:** 3.265... ## Types of Data | | **Qualitative Data** | **Quantitative Data** | |:---|:---|:---| | **Nominal Data** | - Gender (Wo...

# Levels of Measurement - understand in simplest terms ## Data - **Qualitative:** "It was great fun" - **Quantitative:** - **Discrete:** 5 - **Continuous:** 3.265... ## Types of Data | | **Qualitative Data** | **Quantitative Data** | |:---|:---|:---| | **Nominal Data** | - Gender (Women, Men) - Hair color (Blonde, Brown) - Ethnicity (Hispanic, Asian) | - Letter grades: A, B, C | | **Ordinal Data** | - First, second, and third | - Economic status: low, medium | | **Discrete Data** | - The number of students in a class - The number of workers in a company - The number of home runs in a baseball game | | | **Continuous Data** | - The height of children | - The square footage of a two-bedroom house - The speed of cars | ## Levels of Measurement - **Nominal data:** Categories (no ordering or direction) - **Ordinal data:** Ordered Categories (rankings, order, or scaling) - **Interval data:** Differences between measurements but no true zero. - **Ratio data:** Differences between measurements, true zero exists. ## Relationship of Levels of Measurement - **Non-parametric** (qualitative data): Nominal, Ordinal - **Parametric** (quantitative data): Interval, Ratio *Nonparametric statistics may be used to analyze interval and ratio data measurements.* ## Levels of Measurement Table | Levels of Measurement | | |:---|:---| | **Nominal** | Named Variables | | **Ordinal** | Named + Ordered Variables | | **Interval** | Named + Ordered + Proportionate Interval between Variables | | **Ratio** | Named + Ordered + Proportionate Interval between Variables + Can accomodate Absolute Zero | ## Explanation of Levels of Measurement | Levels of Measurement | Description | |:---|:---| | **Nominal** | Categorizes, labels, classifies, names, or identifies types or kinds of things that can’t be quantified. | | **Ordinal** | Provides rank order of objects or individuals from first to last or best to worst. | | **Interval** | Includes rank ordering and this additional characteristic: equal intervals or distances between adjacent numbers. | | **Ratio** | Includes rank ordering, equal intervals, and this additional characteristic: an absolute zero point (which permits forming ratio statements). |