I need help with these questions
1-3= 6/3. 5= 171 X - 3 =- 2/3. 5 = -157 - 3 = - 3/305 = -86 - 3 = 0/3.5 = 0 - - JO - -3= 0/3.5=0 NO - 3 = - 1/3.5 = - 29 OMMNNY - 3 = -1/3.5 = -.29 00 0 -3 = 1/ 305 =29 E = ( 24 8 = ( 24) 2= 53 8 = 170 8= 124 n = 8 r = n Exy - Ex . Ev En Ex - - ( Ex ) ? ] (ney = - ( zy ) ? ] = 8(53 ) -( 24 ) ( 24 ) 28 ( 170 ) - ( 24 ) [8 ( 124 ) - ( 24 ) 2 - 38 Viucal = 0 311 In ofen edulav2223/mod/forum/view.php?id=156886 due Tuesday, September 20 https://ilearn.sfsu.edu/ay2223/mod/forum/view.php?id-156886 2 . Is this a positive or a negative correlation? Why? 3. Is this a strong or a weak correlation? Why? 4. Draw a scatterplot for these data. 5. Calculate the coefficient of determination. Be sure to include the sign of the coefficient of determination. Round to 2 decimal places 6. What proportion of vary is accounted for by vary? What amount of vary is accounted for by vary? 7. What proportion of vary is not accounted for by vary? What amount of vary is not accounted for by vary? 8. What proportion of vary is accounted for by vary? What amount of vary is accounted for by vary? 9. What proportion of vary is not accounted for by vary? What amount of vary is not accounted for by vary?day, September 20 https://ilearn.sfsu.edu/ay2223/mod/forum/view.php?id=156886 , 0371-11 Psychological Statistics Fall 2022 My Courses / PSY037111-F22R-2965 / Week 3: Correlation / Homework 2 - due Tuesday, September 20 Search forums Homework 2 - due Tuesday, September 20 Question A. Fill out a table like the one below, but using your birth date in column X and the first 8 digits of your Student ID number in column Y. (In the example below, I use my birth date and the first 8 digits of a hypothetical student ID number. Don't use these numbers! Use your own numbers....) variance = Birth date: 03-31-1966 (all 8 digits are in column X) ID number. 973123456 (the first 8 digits are in column Y ; drop the last digit of the ID number) (1= 3)2 + ( 1- 3)2 + ( 2 - 3)2 + (0- 3 ) 2 X = birth date (1-3)2 + (9-312 +(9-3)2x ( 1-3)2 digits Y = ID number digits 36 36 4 first number 98/ 4 = 12.25 second 3 number 29 - ON - - 7 SEd Dey = third number 3 FNNWWO - D fourth 12.25 - 17 - 265 number = 3.5 = 2.69 = 2.7 fifth number sixth number a . meanx 3 a meany= 3 add 24 / 8 = mean 24 /8 = 3 seventh 6 number . Variancex = 12. 25 Variancey = 7. 265 eighth 5 . Sed Dev = 3 .5 Stil Deve 2. 70 number 2- Score ( X ) REMEMBER, DO NOT USE THE NUMBERS IN THE TABLE ABOVE. USE YOUR OWN NUMBERS!!!! 1- 3= - 2 / 3. 5 = First, answer the following questions: 1-32-2/ 3. 5 = -. a. Calculate mean , vary and sidDevx. Round to 2 decimal places 2- 35-1 / 3. 52 ". b. Convert each of the scores in the X column into its corresponding z-score. Round to 2 decimal places. 0- 3 = - 3 /3. 5 = 70 C. Calculate meany , vary and sidDevy. Round to 2 decimal places. 1- 3 = - 2/3 . 5 2 9- 3 = 6 /3. 5 d. Convert each of the scores in the Y column into its corresponding z-score. Round to 2 decimal places. 9 - 3 = 1 - 32 13.5 Then, answer the following questions: 1. Calculate the Pearson product-moment correlation coefficient, r, between X and Y. Be sure to include the sign of r. Round to 2 decimal places. 9/15/2022 of 4
