http://www.amazon.com/Nintendo-3DS-Cosmo-Black/product-reviews/ 1.0 out of 5 stars wrong item, March 29, 2011 By A Dinosaur-Shaped Car "Homosexual Porn" - See all my reviews Fun:1.0 out of 5 stars This review is from: Nintendo 3DS - Aqua Blue (Video Game) Seller mailed me a Virtual Boy painted blue, with the legs torn off, instead of the item described. Included a handwritten note that said "basically the same thing".
h*g
3 楼
I have 2 groups of data, e.g. group one is 1,2,1,3,4, group two is 45,46,56, 34,40. I want to calculate the ratio (group two/group one). I will take the means of the two groups and calculate the ratio. How do I get the SEM or SD of the ratios? Thanks.
x*i
4 楼
好玩 我家娃去了一年多了,攒了无数的badge,家里到处都是他自己做的玩具 home depot也有手工,每月一次,主题以实用为主,培养能力但不太好玩
【在 h*d 的大作中提到】 : http://www.amazon.com/Nintendo-3DS-Cosmo-Black/product-reviews/ : 1.0 out of 5 stars wrong item, March 29, 2011 : By : A Dinosaur-Shaped Car "Homosexual Porn" - See all my reviews : Fun:1.0 out of 5 stars : This review is from: Nintendo 3DS - Aqua Blue (Video Game) : Seller mailed me a Virtual Boy painted blue, with the legs torn off, instead : of the item described. Included a handwritten note that said "basically the : same thing".
【在 h*********g 的大作中提到】 : I have 2 groups of data, e.g. group one is 1,2,1,3,4, group two is 45,46,56, : 34,40. I want to calculate the ratio (group two/group one). I will take the : means of the two groups and calculate the ratio. How do I get the SEM or SD : of the ratios? Thanks.
m*i
7 楼
好玩 我家娃去了一年多了,家里到处都是他自己做的trucks and wood toys.
【在 x*****i 的大作中提到】 : 好玩 : 我家娃去了一年多了,攒了无数的badge,家里到处都是他自己做的玩具 : home depot也有手工,每月一次,主题以实用为主,培养能力但不太好玩
h*g
8 楼
I only want to get the ratio of group2 to group1. But I need to present the data as ratio +or- SD(orSEM). I cannot give a single ratio without SD or SEM . What I mean is that I get an average of group 1 and average of group2, then get the ratio. But how do I calculate the SD or SEM of the ratio? Thanks.
【在 h*********g 的大作中提到】 : I only want to get the ratio of group2 to group1. But I need to present the : data as ratio +or- SD(orSEM). I cannot give a single ratio without SD or SEM : . What I mean is that I get an average of group 1 and average of group2, : then get the ratio. But how do I calculate the SD or SEM of the ratio? : Thanks.
【在 h*********g 的大作中提到】 : I have 2 groups of data, e.g. group one is 1,2,1,3,4, group two is 45,46,56, : 34,40. I want to calculate the ratio (group two/group one). I will take the : means of the two groups and calculate the ratio. How do I get the SEM or SD : of the ratios? Thanks.
y*p
13 楼
多少钱买自己做的玩具?
【在 x*****i 的大作中提到】 : 好玩 : 我家娃去了一年多了,攒了无数的badge,家里到处都是他自己做的玩具 : home depot也有手工,每月一次,主题以实用为主,培养能力但不太好玩
d*r
14 楼
Let's assume the mean and std of group one are A and a, respective. Accordingly, the mean and std of group two are B and b, respectively. The mean of group one divided by group two equals A/B, whereas the std of the ratio equals (A/B)*[(a/A)^2+(b/B)^2]^0.5.
56, the SD
【在 h*********g 的大作中提到】 : I have 2 groups of data, e.g. group one is 1,2,1,3,4, group two is 45,46,56, : 34,40. I want to calculate the ratio (group two/group one). I will take the : means of the two groups and calculate the ratio. How do I get the SEM or SD : of the ratios? Thanks.