Add New Description

Fill up the form and submit

নিচের কোন সূত্রটি শুদ্ধ (প্রচলিত চিহ্নে)?

r = \frac{\sum_{i = 1}^{n} (x_{i} - \bar{x}) (y_{i} - \bar{y})}{\sqrt{\sum_{i = 1}^{n} (x_{i} - x) \sum_{i = 1}^{n} (y_{i} - y)^{2}}}

r = \frac{\sum_{i = 1}^{n} (x_{i} - \bar{x}) \sum_{i = 1}^{n} (y_{i} - \bar{y})}{\sqrt{\sum_{i = 1}^{n} (x_{i} - x) \sum_{i = 1}^{n} (y_{i} - y)^{2}}}

r = \frac{\sum_{i = 1}^{n} (x_{i} +) (y_{i} - \bar{y})}{\sqrt{\sum_{i = 1}^{n} (x_{i} - x) \sum_{i = 1}^{n} (y_{i} - y)^{2}}}

r = \frac{\sum_{i = 1}^{n} (x_{i} - \bar{x}) (y_{i} - \bar{y})}{\sqrt{\sum_{i = 1}^{n} [(x_{i} - x) \sum_{i = 1}^{n} (y_{i} - y)]^{2}}}