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Home/Tag: Statistics
1 12, 2018

Least Squares Best Fit

By |2018-12-01T06:33:18+10:00December 1st, 2018||Comments Off on Least Squares Best Fit

Least Squares Best Fit Go to the Least Squares Best Fit Forum to see more questions or ask your own Formulas used in Least Squares Best Fit $y=mx+b$  $m=r\frac{s_y}{s_x}$ $y-intercept = \bar{y}-m\bar{x}$ Worked examples Researchers have found a correlation between the length of the legs of puppies and [...]

29 11, 2018

Data Types

By |2018-11-29T16:08:15+10:00November 29th, 2018||Comments Off on Data Types

Data Types Go to the Statistics Forum to see more questions or ask your own Definitions Quantitative or Numerical Data: data that has a numerical value. It is counting something and the answer must be a number. How many people drive to school, how many children in a family [...]

29 11, 2018

Median

By |2018-11-29T15:58:11+10:00November 29th, 2018|Tags: , , |Comments Off on Median

Median Middle score $\frac12(n+1)$ score Go to the Statistics Forum to see more questions or ask your own Worked examples For the following set of scores find the median: 1, 8, 7, 4, 8, 8, 7, 12, 3, 2, 6 1 2 3 4 6 7 7 8 8 [...]

29 11, 2018

Median From Table

By |2018-11-29T15:50:54+10:00November 29th, 2018||Comments Off on Median From Table

Median From Table Go to the Statistics Forum to see more questions or ask your own Worked examples Find the median Number of hours 0 to 4 5 to 9 10 to 14 15 to 19 20 to 24 Class Centre 2 7 12 17 22 Frequency 5 8 [...]

28 11, 2018

Best Measure

Best Measure Go to the Statistics Forum to see more questions or ask your own Worked examples Jose managed to save the following amounts over the 8 weeks before he went to the Gold Coast for schoolies’ week: $30,$32, $50,$45, $35,$55, $56$40, \$300. Which measure [...]

28 11, 2018

Mean & Mode Graphs

Mean & Mode Graphs Go to the Statistics Forum to see more questions or ask your own Worked examples Which of the diagrams below displays a set of scores which has its mode less than its mean? the mode is the highest point on the diagram the mean is [...]

28 11, 2018

Statistics & The Calculator

Statistics & The Calculator Go to the Statistics Forum to see more questions or ask your own Worked examples It is very important to know how to use your most valuable tool, your calculator. This tutorial will outline the steps required to enter statistics correctly into your calculator (Casio fx82AU and [...]

28 11, 2018

Stem & Leaf Plots

Stem & Leaf Plots Go to the Statistics Forum to see more questions or ask your own Worked examples The following scores (out of 50) were achieved in a Spanish test in a class of 23 students. The results are set out below in a stem and leaf graph. [...]

28 11, 2018