This article throws light upon the four main forms of frequency curves. The forms are: 1. Symmetrical Unimodal Curve 2. Moderately Asymmetrical (Skew) Distribution 3. Extremely Skew (J- Shaped) 4. U-Shaped or Antimodal Curves. Form # 1. Symmetrical Unimodal Curve: Point of maximum in the middle and the curve is symmetrical on both sides. Form […]