A student's confusion over Student's t-test values

  • Thread starter Thread starter anisotropic
  • Start date Start date
  • Tags Tags
    Confusion T-test
anisotropic
Messages
59
Reaction score
0
Hello,

I've been working on this assignment for the past while, having to do with independent t-tests and the like. I have two major questions that I can't wrap my head around:

- When looking at the critical values of Student's t distribution table, what do you use as a critical value if your df value is not listed specifically? Say you need to know the critical value for a df of 120, but it only has the critical values for a df of 100 and a df of 140...
- On one of the [computer generated] analyses, I keep getting negative values for the t-value (-5.xxxx). I have no clue what this means. How is a negative number significant? Is it an error I've made?
 
Physics news on Phys.org
- Interpolate between 100 and 140.
- the numerator for the t value is = (statistic - hypothesis). If statistic < hypothesis then t < 0.
 
Last edited:

Thread 'Roulette wheel physics and probability'

Hi all, I've been a roulette player for more than 10 years (although I took time off here and there) and it's only now that I'm trying to understand the physics of the game. Basically my strategy in roulette is to divide the wheel roughly into two halves (let's call them A and B). My theory is that in roulette there will invariably be variance. In other words, if A comes up 5 times in a row, B will be due to come up soon. However I have been proven wrong many times, and I have seen some...
View full post »

Thread 'Here's a Statistics problem for game of Polo (or Hockey if you like)'

Namaste & G'day Postulate: A strongly-knit team wins on average over a less knit one Fundamentals: - Two teams face off with 4 players each - A polo team consists of players that each have assigned to them a measure of their ability (called a "Handicap" - 10 is highest, -2 lowest) I attempted to measure close-knitness of a team in terms of standard deviation (SD) of handicaps of the players. Failure: It turns out that, more often than, a team with a higher SD wins. In my language, that...
View full post »

Similar threads

B Statistical Hypothesis Testing
Replies
5
Views
2K
B Chi-squared test stat choosing a critical value
Replies
5
Views
3K
I Student t test with small sample number
Replies
5
Views
2K
MHB Investigating Reading Comp. w/ Cultural Capital: A T-Test
Replies
16
Views
3K
MHB Performance of students - Hypothesis testing
Replies
20
Views
3K
I Proper understanding of p-value
Replies
5
Views
2K
A Low value standard deviation bias
Replies
6
Views
2K
A 2 samples T test in case of non-normal distribution
Replies
9
Views
2K
MHB Test Equivalence: Med Student Seeking Help
Replies
1
Views
2K
MHB Which is the mean value of the sample?
Replies
10
Views
2K

Hot Threads

Recent Insights

Back
Top