The mean of the following distribution is 50.

xi | 10 | 30 | 50 | 70 | 90 |
---|---|---|---|---|---|

fi | 17 | 5a + 3 | 32 | 7a - 11 | 19 |

The mean of the following distribution is 50.

xi | 10 | 30 | 50 | 70 | 90 |
---|---|---|---|---|---|

fi | 17 | 5a + 3 | 32 | 7a - 11 | 19 |

Answer:

xi | 10 | 30 | 50 | 70 | 90 |
---|---|---|---|---|---|

fi | 17 | 5a + 3 | 32 | 7a - 11 | 19 |

fixi | 170 | 150a+90 | 1600 | 490a-770 | 1710 |

Mean =