Compute the vanance of this frequency distribution. Score Number of Students 4. 3 10 Follow the...

  

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Compute the vanance of this frequency distribution. Score Number of Students 4. 3 10 Follow the steps indicated in each column to complete the table below. Steps: 1. Compute the mean. Solution: Number of Students Score X fX 6 3 4 10 7. EfX = 2. Subtract the mean from each score and square X - X (X – X)² 4 the results. 6. 3 9. 4 10 7 no X-X (X-X) f(X – X)² 3. Multiply the result by the corresponding frequency. Add the 4 1 result in the f(X – X)² column. 10 7 4. Compute the variance using the formula: o2 = M54 Compute the vanance of this frequency distribution. Score Number of Students 4. 3 10 Follow the steps indicated in each column to complete the table below. Steps: 1. Compute the mean. Solution: Number of Students Score X fX 6 3 4 10 7. EfX = 2. Subtract the mean from each score and square X - X (X – X)² 4 the results. 6. 3 9. 4 10 7 no X-X (X-X) f(X – X)² 3. Multiply the result by the corresponding frequency. Add the 4 1 result in the f(X – X)² column. 10 7 4. Compute the variance using the formula: o2 = M54