3a. A lot of data is needed to do a statistical test, like the number of correct predictions of each participant in each group and calculate the percentage of accuracy. The difference between groups and the variation within groups are important aspects of a statistical test. The “difference between groups” would be calculated by finding the average of correct answers from the psychic group and the average of correct answers from the nonpsychic group, and then they would be subtracted. So, in each group, I will add up all the correct answers and divide by 60, which is the number of participants in each group, then I will subtract both calculations. 3b. The formula of standard deviation will be used to calculate the variation within the two groups. Xi is each participant’s number of correct answers and x is the average of the correct answers of the group of that participant. n is the sample size of the group, which is 60. is the sign of summation, or the addition of all the calculations of (xi-x) squared. 3c. Results are called statistically significant if they are unlikely to have occurred by chance. In order for the results of this experiment to be statistically significant, the difference between both averages of the groups must be about 2 times or accurately 1.96 times the standard deviation of the
3a. A lot of data is needed to do a statistical test, like the number of correct predictions of each participant in each group and calculate the percentage of accuracy. The difference between groups and the variation within groups are important aspects of a statistical test. The “difference between groups” would be calculated by finding the average of correct answers from the psychic group and the average of correct answers from the nonpsychic group, and then they would be subtracted. So, in each group, I will add up all the correct answers and divide by 60, which is the number of participants in each group, then I will subtract both calculations. 3b. The formula of standard deviation will be used to calculate the variation within the two groups. Xi is each participant’s number of correct answers and x is the average of the correct answers of the group of that participant. n is the sample size of the group, which is 60. is the sign of summation, or the addition of all the calculations of (xi-x) squared. 3c. Results are called statistically significant if they are unlikely to have occurred by chance. In order for the results of this experiment to be statistically significant, the difference between both averages of the groups must be about 2 times or accurately 1.96 times the standard deviation of the