[问题] ADM2303作业讨论

[朝露如我降人间]

27号就是due day了，大家做的如何了？

 

[朝露如我降人间]

TIP: Should "battle-field" be considered as one word or two separate words?!?!

My prof told us to count it as one word and not count the hyphin, so the word battle-field would be 11 letters

 

[KpS]

可以详细点说说吗

 

[小蓝蓝]

到2303的论坛上去看看拉飘~~~各种各样的问题都有得飘~~~好多人都问了飘想知道的东西飘~~~

 

[KpS]

) What is the 90th percentile of net sales.
(N+1)* K/100
=(978+1)*90/100
=881.1
Md=X880+.9(X990-X880)
=881.1+.9(990-881)
=979.2
Leaf Unit = 10000
这个我觉得是错的,大家谁能告诉我你们的答案是什么

谢了

 

[朝露如我降人间]

i am just getting started

 

[朝露如我降人间]

who can post the data gathering from the Q1, coz on the form Prof said we should count it out by our hand, such a bitch!!!

 

[bbrother_bbrothe]

最初由 KpS 发布
) What is the 90th percentile of net sales.
(N+1)* K/100
=(978+1)*90/100
=881.1
Md=X880+.9(X990-X880)
=881.1+.9(990-881)
=979.2
Leaf Unit = 10000
这个我觉得是错的,大家谁能告诉我你们的答案是什么

谢了

到881.1一直都没错
1. Data-Sort dont use discending, use ascending the data.
2.u need to take the value of 881th and 882th, which are "428002" and "428395".
3. use the formula
90% percentile= X881+0.1(X882-X881)= 428002+0.1(428395-428002)=428041.3

Thus, 90% of the data in the column will lie below 428041.3.

 

[bbrother_bbrothe]

第一题。
c1,c2,c3 分别是word count of the speech.
比如，c1的表格就是4，4，3，5，4（分别代表Four score and seven year），以此类推。

然后Enable command

MTB>stack c1 c2 c3 - c6

MTB>hist C6

 

[bbrother_bbrothe]

2a.
因为C6里面有些数据是" NA ",所以要先把C6里的CODE TYPE改变。
DATA>CHANGE DATA TYPE>TEXT TO NUMERIC

CODE DATA FROM COLUMNS : C6
INTO COLUMNS: C7

MTB > Describe C1;
SUBC> Mean;
SUBC> StDeviation.

 

[bbrother_bbrothe]

c) (4) Prepare a cumulative frequency diagram (ogive) of the net sales

Using

Graph-Emperical CDF

 

[bbrother_bbrothe]

上面的答案供大家参考。

 

[KpS]

请问怎么把那个表格弄出来啊,总是格式不对,
感谢信息

最初由 bbrother_bbrothe 发布
第一题。
c1,c2,c3 分别是word count of the speech.
比如，c1的表格就是4，4，3，5，4（分别代表Four score and seven year），以此类推。

然后Enable command

MTB>stack c1 c2 c3 - c6

MTB>hist C6

 

[朝露如我降人间]

brother, qiang ren

 

[朝露如我降人间]

第一题的data，按照字母多少顺序，1-11
7 50 60 59 33 24 15 6 10 4 3
注意引明出处，不然会很惨