103年國營事業英文門檻推測 (vs去年) - 國營工作討論
By Margaret
at 2015-01-01T08:48
at 2015-01-01T08:48
Table of Contents
大家好, 現在已經有22位戰友的資料 http://ppt.cc/~0e0
藍色算法 ~ 預測均標 11.52
黃色算法 ~ 預測均標 9.76
另外若單純只用102年vs103年的資料計算如下 http://ppt.cc/7YtI
只用一年資料的話, 兩種算法預測的均標都是 10.83
算這個東西~ 到底意義有多大呢? (或這問說信心水準有多高)
這問題真的沒辦法回答
不過如果我們用98~101年的資料來預測102年 計算如下 http://ppt.cc/-xeG
藍色算法 ~ 預測均標 23.95
黃色算法 ~ 預測均標 20.58
實際均標 21.67 (樣本數只有11位)
恩... 究竟準不準... 我想見人見智 :")
不過我認為~ 這樣的推測方式, 是肯定比在版上問大家今年考幾分來推測準
最後跟大家分享這張圖 http://ppt.cc/4j4H
從這張圖可以看出來,
(1) 22位同學102年的成績排名~ 均標先生是第19.5名
可見得在這個版上的大家, 基本上英文程度都還不錯
所以如果單純只問大家今年考怎樣, 一定會將均標推論過高
(2) 有網友說, 我前面的算法是偏向"平均值"的計算方式, 但均標是中位數
這是相當正確的說法
至於中位數要怎麼推測呢? 我有一個簡單的想法,不知道大家覺得如何?
也就是~ 去年均標先生是第19.5名, 雖然103大家的名次和102比起來有些許變動
不過基本上前10名還是前10名, 後10名也還是後10名~
所以假設 均標先生今年還是 19.5名... 那推論今年分數是在 11~14之間
之前三種算法的結果也都落在11~14的估算區間~
(3) 樣本的問題
基本上, 這22位同學平均分數掉了10.84分 (45.18掉到34.35) 而且
會不會是因為上來報分數的人, 都是因為今年考得比較差所以才會來報呢?
我想這是有可能的~ 愛白大和D大之外, 逆勢成長的只有n2jls3大大
所以在這邊呼籲~ 更多的人把你的分數分享一下~ :")
格式 → y98:s39.17 / y100:s32 /y101:s47.2 / y102:s32.5 / y103:s16.7
希望樣本數至少可以有30個
不一定要真的是當年考的分數, 只是自己在家拿前年考卷寫模擬考的分數也可以
就某方面來說, 這樣的成績會更好~ 因為實力變異比較小
最後~ 也呼籲大家考完之後 好好放鬆心情~ :")
出去走走或是開始規劃接下來的讀書計畫...
我是因為時間多加上對於數學有興趣才在這邊做這些無聊的計算~ 哈
新年快樂!! 今年大家都考上!!
Tony
※ 引述《tonycruise (Tony)》之銘言:
: 大家好, 現在已經有17位戰友的資料
: 103年預測 based on 歷年資料 http://ppt.cc/Wcf3
: 103年預測 based on 102年only http://ppt.cc/Z1kF
: 結果顯示~ 除了愛白大和DominateS大大...
: 其他所有人103 vs 102年的成績都降了10分左右...
: (17位戰友的資料顯示~ 平均成績降了10.8分)
: 所以~ 去年102年的均標21.67... 如果直接降10.8分的話就是10.87分預測均標
: 當然這是不怎麼準確的預測方式~ 因為沒有考慮到標準差的影響...
: 還有... 我還是不知道怎麼把中位數考慮進去 :")
: 若有統計高手~ 還請指導一下~~
: 大家若是有成績可以再分享出來, 我會再繼續計算~
: (是不是還有人今年考得比去年好沒有說阿?)
: ※ 引述《tonycruise (Tony)》之銘言:
: : 最新的計算結果 ~~ 請看這裡 → http://ppt.cc/GkrS
: : 歡迎大家多多提供考試結果~~
: : 版上許多英文成績>30的版友~ 先說聲恭喜..
: : 看了那麼多4x~7x的成績~ 讓只拿16.7分的我挫著等...
: : 不過既然是學科學的~ 應該用稍微合理一點的方法來嚇自己...
: : 97年門檻 17.33
: : 98年門檻 23.33
: : 100年門檻 26.33
: : 101年門檻 38.33
: : 102年門檻 21.67
: : 想請大家分享自己成績嚇(安慰)大家的時候~
: : 順便分享一下寫之前考卷時的成績...
: : ex.小弟的成績為例 y28:s26 意思就是98年,考26分
: : → y98:s39.17 / y100:s32 /y101:s47.2 / y102:s32.5 / y103:s16.7
: : 到時候蒐集多一點大家的資料~
: : 假設每個人每年與均標之間的差距不變,應該可以稍微推估今年均標是多少
: : (當然實際上要考慮標準差,但這邊我們不知道標準差是多少..)
: : 最後~ 預祝今年均標越低越好
--
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