1 / 6

Finding Confidence intervals

Finding Confidence intervals. Confidence Intervals. Confidence interval centers on the sample means plus/minus (t critical )(standard error) Result is a range of scores with the sample mean in the center. Confidence Interval: One sample. CI = M ± (t critical )(Sm).

eman
Download Presentation

Finding Confidence intervals

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Finding Confidence intervals

  2. Confidence Intervals • Confidence interval • centers on the sample means plus/minus (tcritical)(standard error) • Result is a range of scores with the sample mean in the center

  3. Confidence Interval: One sample • CI = M ± (tcritical)(Sm)

  4. Confidence Interval: Two Independent Samples CI = (M1-M2) ± (tcritical)(Sm1-m2) Sm1-m2 = standard error of difference between the means

  5. Paired or Dependent SamplesStandard error of mean of differences

  6. Confidence Interval: Paired or dependent samples • We work with the Differences • CI = Md± tcritical smd • Smd = standard error of mean of differences

More Related