birthday -12-01-2000
- Birthday 12 01 2000 1 (62.91 KiB) Viewed 200 times
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1. For this class, you will be using unique data for your homework assignments based on your date of birth and your SFSU ID number. Please include this information on the top of each homework assignment: • Your name • The 8 digits in your birthdate, i.e., MM-DD-YYYY, in this order. (EXAMPLE: My birthdate is March 31, 1966. So for me these 8 digits are: 03-31-1966, or: 0, 3, 3, 1, 1, 9, 6, 6. BE SURE TO LIST THE DIGITS IN THIS ORDER, L., the 2 digits for your month of birth, followed by 2 digits for your day of birth, and finally followed by the 4 digits for your year of birth.) • The 9 digits in your SFSU ID number, again, in the order they appear on your ID. 2. Compute the mean, the median, and the mode for the 8 digits in your birthdate from
Question 1. 3. Compute the mean, the median, and the mode for the 9 digits in your SFSU ID from
Question 1. 4. Based solely on the relationship between the mean and the median you calculated in
Question 2, would you say that that distribution of scores is symmetrical, negatively skewed, or positively skewed? 5. Based solely on the relationship between the mean and the median you calculated in
Question 3, would you say that that distribution of scores is symmetrical, negatively skewed, or positively skewed? 6. Transform the 8 digits in your birthdate from
Question 1 by subtracting the mean you computed in
Question 2 from each digit. Report the resulting set of transformed scores. (Hint: For the N-8 digits in your birthdate from
Question 1, you should get 8 corresponding transformed scores -- one for each of the original 8 digits in your birthdate from
Question 1. Note that some of these mean deviations" will be positive and some will be negative. The sign matters!
Question for thought: Why are some of these mean deviations negative and some of them positive ?) 7. Compute the mean of the 8 transformed scores you obtained in
Question 6. (Hint: You should get o.
Question for thought: Why will you always get o for the mean of the mean deviations ?) 8. First, square each of the N-8 transformed scores that you obtained in
Question 6. Then compute the mean of the resulting 8 squared scores. (NOTE: This "average squared mean deviation" is called the variance. We will discuss the variance in the next section of this class, and it will be central to everything we do for the semester)
7. Compute the mean of the 8 transformed scores you obtained in
Question 6. (Hint: You should get o.
Question for thought: Why wor you always get O for the mean of the mean deviations?) 8. First, square each of the N8 transformed scores that you obtained in
Question 6. Then compute the mean of the resulting 8 squared scores. (NOTE: This "average squared mean deviation is called the variance. We will discuss the variance in the next section of this class, and it will be central to everything we do for the semester.) 9. List all possible unique samples of size n=6 that you can draw from the N=8 digits in your birthdate from
Question 1. For each sample of size n-6 digits that you list, compute the mean of that sample of digits. (Hint: there is a total of 28 different ways to choose a sample of n-6 digits from the total Nu8 digits in your birthdate from
Question 1. So you should get 28 samples of size n=6 for your answer to
Question 9, and 28 means for those 28 samples.) 10. What is the mean of the 28 sample means that you computed in
Question 9? How does it compare to the mean of the 8 digits in your birthdate that you computed in
Question 2. that contion