Question

find the equation of the regression line for the given data.

x | y |

430 | 150 |

480 | 170 |

320 | 130 |

380 | 120 |

290 | 70 |

530 | 180 |

Predict the value of

Y for x=180

x=100

x=140

x=210

Answer #1

solution:-

the regression line is

**y^ = 0.393 x −22.693**

explanation:-

y^ = b x + a

y^ = 0.393 x - 22.693

**Predict the value of Y**

x = 180

=> y^ = 0.393(180) - 22.693

**=> y^ = 48.0**

x = 100

=> y^ = 0.393(100) - 22.693

**=> y^ = 16.6**

x = 140

=> y^ = 0.393(140) - 22.693

**=> y^ = 32.3**

x = 210

=> y^ = 0.393(210) - 22.693

**=> y^ = 59.8**

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