To T or not to T
If you have a data set with 200 scores, would you this be the correct time to use a t- test?
NO
What is the mean height of female students entering the 6th greater than 4.6? Which type of t- test used?
1 sample t- test
Giving coffee in the middle of day has an effect on students' participation in evening classes?
Which tail t- test to use?
two - tailed test...You are wondering if it had an effect, negative or positive
You will use the t-test when the standard deviation is known. Is this true or false?
False
If you measure the weight of eigth grade male students before and after each student takes 1 semester of P.E., is the mean weight loss significant enough to determine that the P.E. helps students reduce their weight?
Which type of t- test is this?
Paired t- test
Giving coffee at midday, lower the participation rate of students in class.
Which kind of tailed t- test would you perform?
One- tailed t- test
In a one sample data set with a data set of 23,29,31,24,22,26,16,28,27,22 hypothesized mean of 24. Calculate the mean, difference, and standard error.
STANDARD ERROR = 1.37, MEAN = 24.8, DIFFERENCE = .8
When the means of more than two groups are compared, the best test used for this is ......
Choice A: Anova
Choice B: T- Test
Anova
Does the mean of the 7th grade male students' test scores differ significantly than the mean of the 7th grade female students' scores?
Which type of t- test?
2 sample t- test.
Allowing students to take a 10- min phone break will increase their performance in class.
One tail or two tailed t- test
One tailed t- test
Can the t-test be used to determine the mean of a single group?
To find the T value of a two sample data set, what does X BAR represent in the formula?
Yes
X BAR= MEAN
The lowest scores on SAT after 9th grade females drank Starbuck?
Which type of t- test?
None, you must have the mean of the scores.
To find the T value of a two sample data set, what does N represent in the formula?
N represents = number of participants in the data set.
To find the T value of a two sample data set, what does S represent in the formula.
S represents = standard deviation.
Should you have the same number of data points in each sampling group?
Yes