Great explanation. I have a query. If I want to find out if Mr Tyson is maintaining the same performance in two semesters. If I keep null hypothesis that there is no significant difference between the marks of two semesters and alternate hypothesis is there is a significant difference between the marks of two semesters. If p value is less than 0.05, can I reject null hypothesis? Then, I accept alternate hypothesis.
Hi Brandon you appear to have use rounded values when deriving your Z value ie your T+ should be 211.5 and not 211 resulting in a slightly different Z value
MrStatguy76 The sum of all the ranks (1+2+3+4+...+n) is n*(n+1)/2. If this sum is to be divided equally between a positive and negative category, each of the two totals should be close to half of that value, which is n*(n+1)/4.
Hello and thank you for this video! I used it to help with my thesis biostats actually but I have a question regarding my excel calculations. My mean is not coming out to be the mean it should be?
You are a great teacher, and this comes from a College Professor.
Same exact compliment
Brandon, you have taught me so much about my passion statistics. I hope you are always blessed with happiness and keep teaching
Thank YOU, i was having such a hard time with my homework. God bless you keep up the great work!!
You're welcome! I will keep working if you promise to do the same. Deal?
I watched many videos to do this but this was the only one I really understood. Thank you!
thank you man
Your videos are great!!! thank you
Great explanation. I have a query. If I want to find out if Mr Tyson is maintaining the same performance in two semesters. If I keep null hypothesis that there is no significant difference between the marks of two semesters and alternate hypothesis is there is a significant difference between the marks of two semesters. If p value is less than 0.05, can I reject null hypothesis? Then, I accept alternate hypothesis.
do we have to take care of the tie ranks in calculating the standard deviation?
Hi Brandon you appear to have use rounded values when deriving your Z value ie your T+ should be 211.5 and not 211 resulting in a slightly different Z value
Do I have to proceed solving mean and sd if my data isn't normally distributed?
Hi! I have a question, what if the sum of postive is 3 and the negative is 0? What is the W?
You are the best! Thank you, Brandon!
Appreciate that my friend! You are awesome too! Keep on learning.
Hi Thank you very much for this tutorial video. I have 1 question, what if T+ equals to 0 and sum of Negative is larger than 0? many thanks!
What is the significance of dividing by 4 in the sampling distribution mean of t+?
MrStatguy76 The sum of all the ranks (1+2+3+4+...+n) is n*(n+1)/2. If this sum is to be divided equally between a positive and negative category, each of the two totals should be close to half of that value, which is n*(n+1)/4.
Hello and thank you for this video! I used it to help with my thesis biostats actually but I have a question regarding my excel calculations. My mean is not coming out to be the mean it should be?
i dont understand how you get p value, what is the formula , thank you brandon
What does it mean if I only have positive signed ranks and the sum of negative ranks is 0.