相关系数怎么求

NO.PZ2018070201000066问题如下The return projections have been ma Eunice. analyst from investment company, for eaof the assets with the same probability of occurrence, whitwo assets are perfectly negatively correlateA.Asset A anAsset B.B.Asset A anAsset C.C.Asset B anAsset C.C is correct.Asset B anAsset C have returns thare the same for Outcome 2, but the exaopposite returns for Outcome 1 anOutcome 3; therefore, because they move in opposite rections the same magnitu, they are perfectly negatively correlateWe calso use the calculator to measure the correlation. The correlation between asset B anasset C is -1, so perfectly negatively correlate2n7，CLR后输入X01=20，Y01=0，X02=10，Y02=10……输入结束后，按2n8，显示1-V，然后显示Error 4，是哪里有错误呢

NO.PZ2018070201000066 问题如下 The return projections have been ma Eunice. analyst from investment company, for eaof the assets with the same probability of occurrence, whitwo assets are perfectly negatively correlate A.Asset A anAsset B.Asset A anAsset C.Asset B anAsset C is correct.Asset B anAsset C have returns thare the same for Outcome 2, but the exaopposite returns for Outcome 1 anOutcome 3; therefore, because they move in opposite rections the same magnitu, they are perfectly negatively correlateWe calso use the calculator to measure the correlation. The correlation between asset B anasset C is -1, so perfectly negatively correlate 老师，这题能不能从头到尾的解签过程 都写出来？解题的逻辑和怎么按计算器？

NO.PZ2018070201000066 问题如下 The return projections have been ma Eunice. analyst from investment company, for eaof the assets with the same probability of occurrence, whitwo assets are perfectly negatively correlate A.Asset A anAsset B.Asset A anAsset C.Asset B anAsset C is correct.Asset B anAsset C have returns thare the same for Outcome 2, but the exaopposite returns for Outcome 1 anOutcome 3; therefore, because they move in opposite rections the same magnitu, they are perfectly negatively correlateWe calso use the calculator to measure the correlation. The correlation between asset B anasset C is -1, so perfectly negatively correlate 老师，我按照说明按了计算器，最后算出来r=-0.2，试了好几次都是这个数字

NO.PZ2018070201000066 问题如下 The return projections have been ma Eunice. analyst from investment company, for eaof the assets with the same probability of occurrence, whitwo assets are perfectly negatively correlate A.Asset A anAsset B.Asset A anAsset C.Asset B anAsset C is correct.Asset B anAsset C have returns thare the same for Outcome 2, but the exaopposite returns for Outcome 1 anOutcome 3; therefore, because they move in opposite rections the same magnitu, they are perfectly negatively correlateWe calso use the calculator to measure the correlation. The correlation between asset B anasset C is -1, so perfectly negatively correlate a和b组合时候，为什么有4个outcome值？这个outcome值是代表return？这个组合是a，b，c三个组合。还是两两组合？