2. I'm very interested in the relationship between statistics anxiety and performance in statistics. Let's assume l'm teaching a class and just before the final exam, I administer a survey of statistics anxiety, which I attach to their exam (not particularly anonymous or confidential). Their data are in the table below. 1. What kind of correlation would you expect to see between these two variables and why? 2. Enter the data into SPSS 3. What is the correlation coefficient (r) between stats anxiety and performance on the exam? How do you interpret this? 4. What is R2 , what additional information does this give us? 5. a. Use SPSS to find the regression equation. b. What score on the exam could we predict someone would receive if they scored a 38 on the anxiety questionnaire? Studen Anxiet Fina y 1 28 41 2 41 58 3 35 63 4 39 89 5 31 92 6 42 64 7 50 55 8 46 70 9 45 51 10 37 72
Permutations and Combinations
If there are 5 dishes, they can be relished in any order at a time. In permutation, it should be in a particular order. In combination, the order does not matter. Take 3 letters a, b, and c. The possible ways of pairing any two letters are ab, bc, ac, ba, cb and ca. It is in a particular order. So, this can be called the permutation of a, b, and c. But if the order does not matter then ab is the same as ba. Similarly, bc is the same as cb and ac is the same as ca. Here the list has ab, bc, and ac alone. This can be called the combination of a, b, and c.
Counting Theory
The fundamental counting principle is a rule that is used to count the total number of possible outcomes in a given situation.
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