https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-quantitative-means/one-sample-t-interval-mean/v/introduction-to-t-statistics 2022-10-07T00:58:19.561984208Z Introduction to t statistics An introduction to why we use t statistics. video https://cdn.kastatic.org/googleusercontent/2BUllnih_Ngofe8u7JB8yHZemE0JSkmnyeau4kMsNMzswiBrdjP0dLeJ7huaJPXsKYmgItvWlXLZhwDnWpSZFOsV Introduction to t statistics An introduction to why we use t statistics. https://cdn.kastatic.org/ka-youtube-converted/a2rd4Qy8yNI.mp4/a2rd4Qy8yNI.mp4 266 One-sample t-intervals https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-quantitative-means/one-sample-t-interval-mean/v/conditions-for-valid-t-intervals 2022-10-07T00:58:19.561984208Z Conditions for valid t intervals Examples showing how to determine if the conditions have been met for making a t interval to estimate a mean. video https://cdn.kastatic.org/googleusercontent/lSv8AMzFuaqF_e6tJVWgDLV-eolG2VsrJqC6aFD5ChFuj_8FoBNvnX1p0Ckslal75RuegyC3uKidESURtryLS7apTA Conditions for valid t intervals Examples showing how to determine if the conditions have been met for making a t interval to estimate a mean. https://cdn.kastatic.org/ka-youtube-converted/WPxnNjD_yoU.mp4/WPxnNjD_yoU.mp4 294 One-sample t-intervals https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-quantitative-means/one-sample-t-interval-mean/e/conditions-one-sample-t-interval-mean 2021-07-01T02:19:29Z Conditions for a t interval for a mean Practice determining if the conditions for a one-sample t interval for a mean have been met or not. Jeff Dodds exercise https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-quantitative-means/one-sample-t-interval-mean/a/reference-conditions-inference-one-mean 2023-12-01T18:36:13.225840292Z Reference: Conditions for inference on a mean article https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-quantitative-means/one-sample-t-interval-mean/v/example-finding-critical-t-value 2022-11-16T04:22:43.7414897Z Example finding critical t value Given a confidence level, we can calculate a critical value (t*) in a t-distribution with n-1 degrees of freedom. video https://cdn.kastatic.org/googleusercontent/NSIts6liG6iVJkGt1Wn2AWhW0vLOJ13nE7aIb6bP8-ntDadLUbz21HL1VANNAgGIWaRXR2FYGbcTQVjhfTZVgBn4 Example finding critical t value Given a confidence level, we can calculate a critical value (t*) in a t-distribution with n-1 degrees of freedom. https://cdn.kastatic.org/ka-youtube-converted/mLh_FPwMdcY.mp4/mLh_FPwMdcY.mp4 239 One-sample t-intervals https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-quantitative-means/one-sample-t-interval-mean/e/finding-critical-value-t 2021-07-01T02:19:31Z Finding the critical value t* for a desired confidence level Practice finding the critical value t* for some given confidence level. Jeff Dodds exercise https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-quantitative-means/one-sample-t-interval-mean/v/calculating-a-one-sample-t-interval-for-a-mean 2022-10-07T00:58:19.561984208Z Example constructing a t interval for a mean Example showing how to calculate a one-sample t interval for a mean. video https://cdn.kastatic.org/googleusercontent/tH5TUexKMThy5PyEAF1p-Hza3JYJQmc8HYDa0EzWr7KLQ7kTxuwJli_5N_fSXqOhujnr6TOarK2-ZpaEyWAhiu8 Example constructing a t interval for a mean Example showing how to calculate a one-sample t interval for a mean. https://cdn.kastatic.org/ka-youtube-converted/6G3jMjAqNqM.mp4/6G3jMjAqNqM.mp4 358 One-sample t-intervals https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-quantitative-means/one-sample-t-interval-mean/e/calculating-one-sample-t-interval-mean 2026-06-23T13:38:27.041531116Z Calculating a t interval for a mean Practice constructing a one-sample t interval for a mean. Jeff Dodds exercise https://www.khanacademy.org/math/ap-statistics/xfb5d8e68:inference-quantitative-means/one-sample-t-interval-mean/a/interpret-one-sample-t-interval-mean 2021-07-01T02:19:30Z Interpreting a confidence interval for a mean article https://www.khanacademy.org/math/statistics-probability/confidence-intervals-one-sample/estimating-population-mean/v/sample-size-for-a-given-margin-of-error-for-a-mean 2022-10-07T00:58:19.561984208Z Sample size for a given margin of error for a mean Calculate the approximate sample size required to obtain a desired margin of error in a confidence interval for a mean. video https://cdn.kastatic.org/googleusercontent/jzKNTSqryEb1eDJfTdJGKD6ZDBTOGTcy5KOqsINkdZtcB0-0LB16s6jIXLE2mSKGR8bIW-Vo_Ws3aIgejrKaXgdV Sample size for a given margin of error for a mean Calculate the approximate sample size required to obtain a desired margin of error in a confidence interval for a mean. https://cdn.kastatic.org/ka-youtube-converted/FSVDJoHZ3rM.mp4/FSVDJoHZ3rM.mp4 462 One-sample t-intervals https://www.khanacademy.org/math/statistics-probability/confidence-intervals-one-sample/estimating-population-mean/e/sample-size-margin-error-one-sample-t-interval-mean 2024-11-11T02:56:25.272408758Z Sample size and margin of error in a confidence interval for a mean Practice estimating what sample size is required for a given margin of error in a confidence interval for a mean. Jeff Dodds exercise