Standard deviation is a number corresponding to a bell curve describing how spread out the data is. Variance is a numerical value indicating how spread out the data is. Why are these two together? Because the standard deviation is the square root of the variance. Briefly, the math involved for computing these involves comparing each score with the average and then summing up the distance each score has from the average and comparing them to a standardized score, which has more math involved than we can compute. It's complicated, I know.
If you wish to make a career in quantitative research then I would suggest you to do a course in statistics.
Seems connects the subject, a three-mile run , with additional information, that it's more arduous depending on the day and time.
Standards in this strand: - - - - - -
Comprehension and Collaboration: -
Engage effectively in a range of collaborative discussions (one-on-one, in groups, and teacher-led) with diverse partners on grade 3 topics and texts , building on others' ideas and expressing their own clearly. -
Come to discussions prepared, having read or studied required material; explicitly draw on that preparation and other information known about the topic to explore ideas under discussion. -
Follow agreed-upon rules for discussions (., gaining the floor in respectful ways, listening to others with care, speaking one at a time about the topics and texts under discussion). -
Ask questions to check understanding of information presented, stay on topic, and link their comments to the remarks of others. -
Explain their own ideas and understanding in light of the discussion. -
Determine the main ideas and supporting details of a text read aloud or information presented in diverse media and formats, including visually, quantitatively, and orally. -
Ask and answer questions about information from a speaker, offering appropriate elaboration and detail. Presentation of Knowledge and Ideas: -
Report on a topic or text, tell a story, or recount an experience with appropriate facts and relevant, descriptive details, speaking clearly at an understandable pace. -
Create engaging audio recordings of stories or poems that demonstrate fluid reading at an understandable pace; add visual displays when appropriate to emphasize or enhance certain facts or details. -
Speak in complete sentences when appropriate to task and situation in order to provide requested detail or clarification. (See grade 3 Language standards 1 and 3 here for specific expectations.)
Descriptive statistics allow you to characterize your data based on its properties. There are four major types of descriptive statistics: