Module 2 Quiz: SGS 401: Political Statistics (2024 Spring - B)

2024SpringB-X-Kaire Quizzes Module 2 Quiz  Module 2 Quiz Due Mar 24 at 11:59pm Points 11 Questions 11 Available Mar 14 at 12am - May 16 at 11:59pm Time Limit None Allowed Attempts Unlimited Instruc ! ons A ! empt History Attempt Time Score KEPT Attempt 3 less than 1 minute 11 out of 11 LATEST Attempt 3 less than 1 minute 11 out of 11 Attempt 2 1 minute 10 out of 11 Attempt 1 6 minutes 5.67 out of 11 Score for this attempt: 11 out of 11 Submitted Mar 24 at 8:09pm This attempt took less than 1 minute. This quiz covers all the material related to Module 2. You can retake it as many times as you want but you must complete it before the deadline. Please take notes as you go through the quiz. Remember that I will only count your highest grade. Take the Quiz Again 1 / 1 pts Question 1 This type of variable is qualitative in nature, and its different values are not ordered. Ordinal Categorical Correct! Correct! By qualitative, we mean that it is not quantiXed in any way and that it cannot be manipulated through math. 1 / 1 pts Question 2 These variables take only on integer values but can be manipulated through math Ordinal variables Count variables Correct! Correct! 1 / 1 pts Question 3 Continuous variables must be able to take on any value on the real line. True False Correct! Correct! Continuous variables could take on an inXnite number of values within their range. 1 / 1 pts Question 4 Statistical distributions are: A graph showing the frequencies of each of the values of a variable The maximum and minimum values a variable can take A tally of how many times a variable takes on each of its possible values Correct! Correct! In other words, distributions describe the frequencies of each value a variable can take. 1 / 1 pts Question 5 What is a histogram? No answer text provided. A graph that shows the distribution of the data generating process A graph that groups potential values of a variable into bins, and show the proportion of observations that fall into each bin Correct! Correct! An alternative to histograms is density plots. Density plots are used for continuous variables since they operate like histograms with tiny bins and can therefore show the variation of a continuous variable with more detail. 1 / 1 pts Question 6 Why is it important to examine the distribution of a variable? For this question, you need to select multiple correct answers. Pick all that apply. Because the distribution contains all the information of a variable Correct! Correct! Because it can let us know if we are dealing with outliers Correct! Correct! Because it tells us how to analyze the data Checking the distribution can help us track changes in a variable across time Correct! Correct! 1 / 1 pts Question 7 We use these two quantities to summarize a distribution. Pick all that apply. Range Location Correct! Correct! Location is a measure of where in the possible values of a variable we Xnd most variables Scale Correct! Correct! The scale of a variable is a measure of how widespread is our data within the range of a variable. 1 / 1 pts Question 8 This is a measure of central tendency that is susceptible to outliers Mean Correct! Correct! Recall also that the mean is just the average: the sum of all observations divided by the number of observations. Median Standard deviation 1 / 1 pts Question 9 This measure of the scale of a variable tells us how far away the typical observation is from the mean. Standard deviation Correct! Correct! Please remember that the standard deviation tells us the distance to the mean , not the median . This is what makes it susceptible to outliers. Interquartile range 1 / 1 pts Question 10 In statistics, we normally assume that our data comes from a theoretical distribution (i.e. the data generating process). One of those distributions is the normal. Which quantities do we use to describe this distribution? A mean and a standard deviation Correct! Correct! You may wonder about the name ‘standard deviation’. It is deviation because it is measuring distance from the mean. It is standard because it is in the units of the original variable. A median and an interquartile range 1 / 1 pts Question 11 Why is the normal distribution so common in statistical analyses? Select all that apply. Because it is common in nature Correct! Correct! We observe the normal distribution in nature because it is the distribution things take when they are the result of several forces or euctuations that combine across time. Because it is convenient. Quiz Score: 11 out of 11  Previous Next  Last Attempt Details: Time: less than 1 minute Current Score: 11 out of 11 Kept Score: 11 out of 11 3 Attempts so far  View Previous Attempts Unlimited Attempts Take the Quiz Again (Will keep the highest of all your scores) 3 2024 Spring B Home Announcements Modules Discussions Grades Honorlock ASUO After Hours Tutoring ASU Tutoring ASU Course Policies Accessibility Resources Time in AZ ASU Home My ASU Colleges & Schools Map & Locations Contact Us