True or False: A t-test can only be performed when the population variances are known. |
Card: 3 / 44 |
The null hypothesis assumes that there is no significant difference between the means of the two groups being compared. |
Card: 6 / 44 |
Fill in the blank: The t-test is particularly useful for data that follows a ___ distribution. |
Card: 7 / 44 |
The mean difference between the two datasets, the standard deviation of each group, and the number of data points. |
Card: 10 / 44 |
The formula for calculating the t-value in an independent t-test involves the means and ___ of each sample. |
Card: 13 / 44 |
What type of t-test would you use when the sample sizes of the two groups differ significantly? |
Card: 15 / 44 |
Fill in the blank: A significant t-value, compared to the critical value from the T-distribution table, leads to ___ the null hypothesis. |
Card: 17 / 44 |
True or False: The degrees of freedom in a t-test are calculated as the sum of the sample sizes minus one. |
Card: 21 / 44 |
False. The degrees of freedom are calculated as the sum of the sample sizes minus two. |
Card: 22 / 44 |
![]() Unlock all Flashcards with EduRev Infinity Plan Starting from @ ₹99 only
|
What statistical method is used to assess whether a sample mean differs from a hypothesized value when the population variance is known? |
Card: 23 / 44 |
Fill in the blank: The Central Limit Theorem states that as sample size increases, the distribution of sample means approaches a ___ distribution. |
Card: 25 / 44 |
Z-test versus T-test explained.
|
Card: 28 / 44 |
True or False: The z-score measures how many standard deviations a data point is from the population mean. |
Card: 29 / 44 |
Fill in the blank: In hypothesis testing, a p-value less than the significance level leads to ___ the null hypothesis. |
Card: 33 / 44 |
What type of t-test should be used when comparing the same subjects under two different conditions? |
Card: 35 / 44 |
It provides critical values for determining whether to accept or reject the null hypothesis based on the calculated t-value. |
Card: 38 / 44 |
True or False: A t-test is appropriate for sample sizes larger than 30 when the population standard deviation is known. |
Card: 41 / 44 |
The formula for calculating the t-value in an unequal variance t-test includes the means, variances, and ___ of each sample set. |
Card: 43 / 44 |