Can someone help me with #2 ?? **Observational Study and Data Analysis**1) **Identify the type of observational study for:** Data is obtained by examining hospital records from the last 3 years. - a) Retrospective - b) Cross-sectional - c) Prospective - d) None of these2) **What is the class width, the class boundaries, and the class midpoints for the following table:** | Distance | Frequency | |----------|-----------| | 10-15 | 12 | | 16-21 | 5 | | 22-27 | 13 | | 28-33 | 17 | | 34-39 | 9 |3) **Find the mean, standard deviation, and the five-number summary for the following (use a calculator):**---In this exercise, you are tasked with understanding the types of observational studies, determining class characteristics in a frequency distribution table, and calculating basic statistical measures.**Detailed Breakdown:**1. **Type of Observational Study:** - Retrospective studies involve looking at historical data. - Cross-sectional studies analyze data at a single point in time. - Prospective studies look forward and collect data over time. - The study described, which examines hospital records from the last 3 years, is a retrospective study.2. **Class Width, Boundaries, and Midpoints:** - **Class Width**: The difference between the lower limit of a class and the lower limit of the next class. For the given table, the class width is 16 - 10 = 6. - **Class Boundaries**: These are the actual class limits that include all the possible values a variable could assume in that class. For class 10-15, the boundaries are 9.5 and 15.5. - **Class Midpoints**: These are the average of the lower and upper class limits. For class 10-15, the midpoint is (10 + 15) / 2 = 12.5.3. **Calculations:** - **Mean**: The average of all data points. - **Standard Deviation**: A measure of the amount of variation or dispersion of a set of values. - **Five-Number Summary**: The minimum, first

Name: Can someone help me with #2 ?? **Observational Study and Data Analysis
Uploaded: 2024-03-20T07:07:37.000Z
Channel: Bartleby
Description: Can someone help me with #2 ?? **Observational Study and Data Analysis**1) **Identify the type of observational study for:** Data is obtained by examining hospital records from the last 3 years. - a) Retrospective - b) Cross-sectional - c) Pr