class: center, middle, inverse, title-slide # Quiz 2 ## SDS 192: Introduction to Data Science ###
Shiya Cao
Statistical & Data Sciences
, Smith College
###
Fall 2024
--- # What are the standards I will be assessed on in Quiz2? * Transforming Data * Tidying Data * Joining Datasets * Programming in R --- # How will I be assessed on these standards? * There will be 3 questions per standard: 1 point per question. * You can earn up to 3 points per standard. * Quizzes will be automatically graded on Moodle. * Your personal gradebook will be updated after Quiz2 is due. --- # What does Quiz2 look like? * Due Wednesday 11/13 at 9pm. * 12 questions are either single choice question or multiple choices question. * Open everything and you may use any resource (other than your fellow classmates) to complete them. * Time limit: 3 hours. * Attempt: 1 time. * If you need any accommodations (letter from ODS) for quizzes, please let me know privately ASAP. --- # How should I prepare? * Before starting Quiz2, study and review: * lectures slides (Lec 13, 15-16, 20, 24). * in-class exercises (recordings & solutions) (Lec 13, 15, 18, 20, 24). * labs (Lab 4-6, 8). * assigned readings from the two textbooks. --- # How should I prepare? * All the concepts in Quiz2 are covered in class. * Transforming Data: `select()`, `filter()`, `arrange()`, `summarize()`, `group_by()`, `mutate()` * Tidying Data: `pivot_longer()`, `pivot_wider()` * Joining Datasets: `inner_join()`, `left_join()`, `right_join()`, `full_join()`, `anti_join()` * Programming in R: Writing functions, iteration * If you have any questions during your study and review: * visit student hours or schedule a time to meet with me. * visit drop-in tutoring at Spinelli Center with specific topics you'd like help on. --- # During Quiz2 * Read each question and each answer option carefully. * For many questions, you don't need to run the codes if you know the answer. * If you don't know the answer, running the codes may be helpful. * For a few questions, you may need to run the codes to get the answer. * For Programming in R questions, you need to understand the concepts of writing functions and iteration. --- # After completing my Quiz2 * Since students take a quiz at different times, in order to be fair to everyone: * Immediately after the attempt: * Only points you get will be posted on Moodle. * No right or wrong answers or any feedback will be posted on Moodle. * After Quiz2 is due at 9pm on Wednesday, 11/13: * Right or wrong answers will be posted on Moodle. * Because of this, there will be **no extension** granted for Quiz2. Please plan ahead accordingly. * On Friday, 11/15: * We will review Quiz2 at the beginning of the class. * After this, if you have any questions related to Quiz2 or your grade, please drop by my student hours or
book an appointment
with me.