Exam 1 Review (Fall 2024) PDF

This review is to help you focus your studying and is not meant to be a carbon copy of what is on the exam. All material we covered in class and on Connect could be on the test, but this is to help guide you over the important material we learned. There will be 40 questions and you will have 50 minu...

This review is to help you focus your studying and is not meant to be a carbon copy of what is on the exam. All material we covered in class and on Connect could be on the test, but this is to help guide you over the important material we learned. There will be 40 questions and you will have 50 minutes to answer all 40 questions. The exam is in person and on paper and a scantron will be provided. Please see the syllabus and class announcements for more details. - Mutually exclusive, be able to give an example - What are the 2 branches of statistics? - How do you write the notation for 2 events that are independent? - What is a Z score? Know the characteristics of it, the **formula,** and if given numbers can you calculate it. - How do we define population? How is sample different than population - Give an example of population and then its sample. - Quantitative vs. Qualitive variables/data, examples? - Descriptive vs. Inferential data, know examples - Why would you subset your data? - How do you make a Horizontal Bar Chart? - What graphical tool is best used to display the relative frequency of a numerical variable? - Can you understand a frequency table, find relative frequency? - How do you find relative frequency? - What is the difference between relative frequency and percent frequency? - If I spent 35% of my weekly budget on food and my monthly budget was \$200 how much money did I spend on Food? - DEFINE Frequency! - A table with numbers and letters Description automatically generated - What proportion of the observations are at least 18 but less than 24? - What statistic is MOST influenced by outliers? - At a local bar in a small town, beer and wine are the only two alcoholic options. The manager noted that of all male customers, 150 ordered beer, 40 ordered wine, and 20 asked for soft drinks. Of female customers 38 ordered beer, 20 ordered wine, and 12 asked for soft drinks. What is the probability that a randomly selected customer orders beer? -  - Given that the camera was purchased at Amazon.com, the probability that it was a Canon brand is \_\_\_\_\_\_. - Types of data and know Time series data compared to cross-sectional data. - - What is a statistic? - Do you remember mean, median, and mode? Which one is most influenced by outliers - Can you use a table to take a statistic like a percent or relative frequency and find the number given the population size? (Think back to the Relative Frequency Case Study) - What is the empirical rule? - What is the most common statistics to show dispersion? - What is Variance, what does it show, and how is it related to standard deviation? - What is covariance? - How can an event be collectively exhaustive? - What is a union in probability and what is the notation? - What is the intersection of 2 events in probability notation? - The intersection of events A = {The Porch, Louie's, The Library, O'Connell's} and B = { The Library, O'Connell's, Logies, Volare} is \_\_\_\_\_\_\_\_\_\_\_\_. - The union of events A = {The Porch, Louie's, The Library, O'Connell's} and B = { The Library, O'Connell's, Logies, Volare} is \_\_\_\_\_\_\_\_\_\_\_\_. - When looking at the probability of an event, all the probabilities must add up to \_\_\_\_\_\_\_\_ - When an event has one outcome we call that an \_\_\_\_\_\_ event. - What is a sample space. What would be the sample space be for letter grades in this class? - What does the complement of A given sample space S mean? - What is the correlation coefficient, **[the formula]**, and if given numbers can you calculate it? - If you are given variance how do you get the Standard deviation? - If the average on exam 1 is an 85 with a standard deviation of 1.5, what is the probability you score less than 75? - What is the probability you score greater than a 90? z table positive