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**Quiz of the applied knowledge of statistics**

Jpanese | 8 | 1 | 10 | 5 | 2 | 10 | 7 | 3 | 8 | 6 |

Mathematics | 10 | 2 | α | 3 | 2 | 8 | 8 | 3 | 9 | 6 |

(1)What is α?

(2)Calculate correlation coeffcient of the score of mathematics and Japanese test.

Answer

Piano→ ↓Recorder | 0point | 1point | 2points | Sum |
---|---|---|---|---|

0point | 0 | 1 | 0 | 1 |

1point | 1 | 3 | 1 | 5 |

2points | 0 | 2 | 2 | 4 |

Sum | 1 | 6 | 3 | 10 |

Answer