Math 310 Exam 3 Word Scramble
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| Question | Answer |
| Response Variable | Measures an outcome or result of a study |
| explanation variable | variable we think explains or causes change in a response variable |
| Correlation coefficient | only values between -1 and 1 |
| Postive corrilation | both go up |
| negative corelation | one goes up one goes down |
| lurking variable | a 3rd variable causing corrilation of z variables |
| Strong relationship | r closer to 1 or -1 |
| no coorilation | r=0 |
| Factorials | positive integer 5! is 5x4x3x2x1 |
| Sequence counting principal | actions are performed in a definate order the total outcomes is the product of the actions possibilities |
| Questions to ask | 1. is there repetition yes- sequencial counting no- question 2 2. is order important yes- permutation (NpK) no- combination (NcK) |
| Uniform sample space | all options have equal odds |
| Addition formula | P(e or F)= p (e) + p(f) - p(e and f) |
| expected value | given by x * p(x) |
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