IGNOU MCS 224 2025 2026 - Find a quadratic regressi on model for the following da

Question

Find a quadratic regressi on model for the following data. Use the regression model and calculate the value of Y at X = 9.

X	3	4	5	6	7
Y	2.5	3.2	3.8	6.5	11.5

26 Dec 2025

Answer :

Word Count : 241

To find a quadratic regression model, we assume the model: [ Y = a + bX + cX^2 ] We have data: [ X: 3, 4, 5, 6, 7 \quad \text{and} \quad Y: 2.5, 3.2, 3.8, 6.5, 11.5 ] We calculate sums required for normal equations: [ \sum

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