Plz answer the questions according to the database below in pictures

3. Write your own practice exam question to help yourself (and other students) get more practice. Use one of the datasets we've worked with (like the cal_mega_dataset) to create a practice exam. Here's an R script you can use as a template. Post your practice exam to the bCourses discussion if you are feeling groovy about it. o Problem 1: Describe the Dataset and Research Question (no R needed! Choose a dataset (posted to bCourses), and identify a research question you could test using the variables in the dataset. Make sure that the DV is measured as a continuous variable; the IV can be either continuous or categorical. Note that your exam will require creating a scale for one of the variables. o Problem 2: Load (and check) the Data o Problem 3: Clean / Create a Scale and Describe the Variables You Will Use in the Model. Graph each variable that will be in your model. Make sure to do any scale creation needed, and remove any outliers / empty levels as necessary. Report descriptive statistics (mean, median, SD, and range) for the continuous variables. You should also report the alpha reliability for the scale you create. o Problem 4: Define, Plot, and Interpret Linear Models to Test Your Theory. Define the linear model (DV - IV), plot this model, and report the intercept, slope(s), and R2 value from this model. How much do you think this pattern is due to sampling error (use bootstrapping OR NHST). What do you learn from this model? Was the researcher's theory supported or not? What are the FOUR reasons this pattern might occur? 4 A B D E F G H 1 Item Description 2 3 4 5 6 7 [I am the life of the party.] [l feel comfortable around people] [1 start conversations.] [I don't talk a lot.) [1 keep in the background.] [I don't like to draw attention to myself.] 8 9 10 11 12 13 [I do a thorough job.) [I can be somewhat careless.) [I am a reliable worker.] [I tend to be disorganized.] [I tend to be lazy.] [1 persevere until the task is finished.] [I make plans and follow through with them.) [I am easily distracted.] 14 [I am original, come up with new ideas.] [I have an active imagination.] [I have few artistic interests.] [In most ways my life is close to my ideal.] [The conditions of my life are excellent.) [I am satisfied with my life.] [So far I have gotten the important things I want in life.) [If I could live my life over, I would change almost nothing.) SCALE (and variable name) EXTRAVERSION e1 e2 e3 e4r e5r eor CONSCIENTIOUSNESS c1 c2r c3 c4r c5r c6 c7 c8 OPENNESS 01 02 o3r SATISFACTION WITH LIFE swls1 swls2 swls 3 slws4 swiss CAPITALISM cap1 cap2 cap3r cap4r capgood1 capgood2r POWER power1 power2R SOULMATES soulmate soulmateR NARCISSISM narcissism DANCE LOVE dance1 dance2 dance3 dance4 dancer dancer EMPATHY emp1 emp2 emp3 emp4r EMOTIONAL KNOWLEDGE knowem1 knowem2 knowem3r knowem4r SLEEP DEPRIVATION sleep1 sleep2 sleep3R [I often think about capitalism.] [I often have conversations about capitalism.] [I don't really think much about capitalism.] [I don't have many conversations about capitalism.] [I think capitalism is good for society.] [I think capitalism causes major problems in society.] =d 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 [In my relationships with others, I have a great deal of power.] [In my relationships with others, my ideas and opinions are often ignored.] [I believe in soulmates.) [I think that you could find "true love" with many different people.] [I am a narcissist. (Note: The word ,narcissist, means egotistical, self-focused, and vain.)] [I feel most like myself when I dance.] [I feel positive emotion when I dance.] [Dancing is one way I express myself] [I try to dance whenever I have free time] [1 feel uncomfortable when I dance) [l try to dance as little as possible] [I feel others, emotions] [l experience emotions deeply] [I am deeply moved by others, sorrows and misfortunes] [I have little concern for other people,s problems and emotions] [I feel like I am able to fully understand someone else,s problems.] [I sometimes know more about others than they know about themselves.] [I realize that I may never fully get to know another person.] [When I feel others' emotions, I don't feel them as strongly as they themselves do.) [How often do you fall asleep or get drowsy during class periods?] (How often do you get sleepy or drowsy while doing your homework?] [Are you usually alert most of the day?] 64 65 66 [How often are you ever tired and grumpy during the day?] [How often do you have trouble getting out of bed in the morning?) [How often do you fall back to sleep after being awakened in the morning?) [How often do you need multiple alarm clocks to awaken you in the morning?] [How often do you think that you need more sleep?] 67 68 69 70 [In the last month, how often have you felt that you were unable to control the important things in your life?] [In the last month, how often have you felt confident about your ability to handle your personal problems?) [In the last month, how often have you felt that things were going your way?] [In the last month, how often have you felt difficulties were piling up so high that you could not overcome them?] 71 72 73 74 75 76 77 78 79 80 81 [How much do you feel the emotion sadness?] [How much do you feel the emotion joy?] [How much do you feel the emotion surprise?] [How much do you feel the emotion happiness?] [How much do you feel the emotion awe?] sleep4 sleeps sleep sleep7 sleep8 PERCEIVED STRESS pss1 pss2R pss3R pss4 EMOTIONS sad joy surprise happiness awe MISCELLANEOUS taco.best smoke.pot pinepizzatasty procrastinate boba pref.book read.scifi need.caff love.music clubbed live.lecture work.school fav.weather hrs.sleep1 hrs.zoom num.screen 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 [I think tacos are better than burritos.] [1 smoke marijuana.) [I think pineapple on pizza is delicious.) [I would call myself a procrastinator.) [1 regularly drink boba.] [If I had to choose, I would rather read a book or watch TV by myself than go to a party with other people.) [I like to read science fiction.] [I need caffeine every day.) [I love music] [I have been clubbing.) How do you usually attend zoom lecture (or the lecture recording)? Are you working outside of school? What's your favorite weather? How many hours of sleep did you get last night? How many total hours on zoom did you spend last week (Monday - Friday)? How many devices with screens do you have within arms reach? how many units are you taking this semester? How many friends do you have on Facebook? (If you do not have a Facebook account, skip this question.) units fb.friends 98 99 100 3. Write your own practice exam question to help yourself (and other students) get more practice. Use one of the datasets we've worked with (like the cal_mega_dataset) to create a practice exam. Here's an R script you can use as a template. Post your practice exam to the bCourses discussion if you are feeling groovy about it. o Problem 1: Describe the Dataset and Research Question (no R needed! Choose a dataset (posted to bCourses), and identify a research question you could test using the variables in the dataset. Make sure that the DV is measured as a continuous variable; the IV can be either continuous or categorical. Note that your exam will require creating a scale for one of the variables. o Problem 2: Load (and check) the Data o Problem 3: Clean / Create a Scale and Describe the Variables You Will Use in the Model. Graph each variable that will be in your model. Make sure to do any scale creation needed, and remove any outliers / empty levels as necessary. Report descriptive statistics (mean, median, SD, and range) for the continuous variables. You should also report the alpha reliability for the scale you create. o Problem 4: Define, Plot, and Interpret Linear Models to Test Your Theory. Define the linear model (DV - IV), plot this model, and report the intercept, slope(s), and R2 value from this model. How much do you think this pattern is due to sampling error (use bootstrapping OR NHST). What do you learn from this model? Was the researcher's theory supported or not? What are the FOUR reasons this pattern might occur? 4 A B D E F G H 1 Item Description 2 3 4 5 6 7 [I am the life of the party.] [l feel comfortable around people] [1 start conversations.] [I don't talk a lot.) [1 keep in the background.] [I don't like to draw attention to myself.] 8 9 10 11 12 13 [I do a thorough job.) [I can be somewhat careless.) [I am a reliable worker.] [I tend to be disorganized.] [I tend to be lazy.] [1 persevere until the task is finished.] [I make plans and follow through with them.) [I am easily distracted.] 14 [I am original, come up with new ideas.] [I have an active imagination.] [I have few artistic interests.] [In most ways my life is close to my ideal.] [The conditions of my life are excellent.) [I am satisfied with my life.] [So far I have gotten the important things I want in life.) [If I could live my life over, I would change almost nothing.) SCALE (and variable name) EXTRAVERSION e1 e2 e3 e4r e5r eor CONSCIENTIOUSNESS c1 c2r c3 c4r c5r c6 c7 c8 OPENNESS 01 02 o3r SATISFACTION WITH LIFE swls1 swls2 swls 3 slws4 swiss CAPITALISM cap1 cap2 cap3r cap4r capgood1 capgood2r POWER power1 power2R SOULMATES soulmate soulmateR NARCISSISM narcissism DANCE LOVE dance1 dance2 dance3 dance4 dancer dancer EMPATHY emp1 emp2 emp3 emp4r EMOTIONAL KNOWLEDGE knowem1 knowem2 knowem3r knowem4r SLEEP DEPRIVATION sleep1 sleep2 sleep3R [I often think about capitalism.] [I often have conversations about capitalism.] [I don't really think much about capitalism.] [I don't have many conversations about capitalism.] [I think capitalism is good for society.] [I think capitalism causes major problems in society.] =d 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 [In my relationships with others, I have a great deal of power.] [In my relationships with others, my ideas and opinions are often ignored.] [I believe in soulmates.) [I think that you could find "true love" with many different people.] [I am a narcissist. (Note: The word ,narcissist, means egotistical, self-focused, and vain.)] [I feel most like myself when I dance.] [I feel positive emotion when I dance.] [Dancing is one way I express myself] [I try to dance whenever I have free time] [1 feel uncomfortable when I dance) [l try to dance as little as possible] [I feel others, emotions] [l experience emotions deeply] [I am deeply moved by others, sorrows and misfortunes] [I have little concern for other people,s problems and emotions] [I feel like I am able to fully understand someone else,s problems.] [I sometimes know more about others than they know about themselves.] [I realize that I may never fully get to know another person.] [When I feel others' emotions, I don't feel them as strongly as they themselves do.) [How often do you fall asleep or get drowsy during class periods?] (How often do you get sleepy or drowsy while doing your homework?] [Are you usually alert most of the day?] 64 65 66 [How often are you ever tired and grumpy during the day?] [How often do you have trouble getting out of bed in the morning?) [How often do you fall back to sleep after being awakened in the morning?) [How often do you need multiple alarm clocks to awaken you in the morning?] [How often do you think that you need more sleep?] 67 68 69 70 [In the last month, how often have you felt that you were unable to control the important things in your life?] [In the last month, how often have you felt confident about your ability to handle your personal problems?) [In the last month, how often have you felt that things were going your way?] [In the last month, how often have you felt difficulties were piling up so high that you could not overcome them?] 71 72 73 74 75 76 77 78 79 80 81 [How much do you feel the emotion sadness?] [How much do you feel the emotion joy?] [How much do you feel the emotion surprise?] [How much do you feel the emotion happiness?] [How much do you feel the emotion awe?] sleep4 sleeps sleep sleep7 sleep8 PERCEIVED STRESS pss1 pss2R pss3R pss4 EMOTIONS sad joy surprise happiness awe MISCELLANEOUS taco.best smoke.pot pinepizzatasty procrastinate boba pref.book read.scifi need.caff love.music clubbed live.lecture work.school fav.weather hrs.sleep1 hrs.zoom num.screen 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 [I think tacos are better than burritos.] [1 smoke marijuana.) [I think pineapple on pizza is delicious.) [I would call myself a procrastinator.) [1 regularly drink boba.] [If I had to choose, I would rather read a book or watch TV by myself than go to a party with other people.) [I like to read science fiction.] [I need caffeine every day.) [I love music] [I have been clubbing.) How do you usually attend zoom lecture (or the lecture recording)? Are you working outside of school? What's your favorite weather? How many hours of sleep did you get last night? How many total hours on zoom did you spend last week (Monday - Friday)? How many devices with screens do you have within arms reach? how many units are you taking this semester? How many friends do you have on Facebook? (If you do not have a Facebook account, skip this question.) units fb.friends 98 99 100