Examining numerical and categorical data Guías de estudio, Notas de estudios & Resúmenes

RSC2601 – Research in Social Sciences 1 RSC2601 - Research in the Social Sciences EXAM PREPARATION This document is a compilation of past UNISA exam Questions and Answers, Assignment Questions and Answers, as well as Test Yourself Questions and Answers from Studyguide. Answers are motivated by a combination of: • Page references to the UNISA Study Guide: • Short summaries regarding the relevant topic(s) in question. Past exams covered are: • May/Jun 2011 • Oct/Nov...

What is 3/4 divided by 2/3? A) 9/8 B) 5/12 C) 5/7 D) 6/7 9/8 A county park has hiking paths with lengths of 1.05, 3.6, 3.17, and 2.2 miles. What is the total length, in miles, of hiking paths in the park? A) 9.02 miles B) 10.02 miles C) 10.12 miles D) 11.2 miles 10.02 miles If there are 2 tablespoons in 1 fluid ounce, how many tablespoons does the following calculation yield? 4 fl oz - 1.5 tbsp 0.5 tbsp 1 tbsp 2.5 tbsp 6.5 tbsp 6.5 tbsp Solve for X: X...

Population - The entire group that is the target of interest, not just people. Eg, "the population of 1 bedroom apartments" Sample - A subgroup of the population. Eg, "the 1 bedroom apartments with dishwashers." Steps in the statistics process - 1. PRODUCE DATA (by studying a sample of the population) 2. EXPLORATORY DATA ANALYSIS (Summarize data.) 3. PROBABILITY ANALYSIS (Determine how the sample may differ from the population.) 4. INFERENCE (draw conclusions) Data - pieces of info ab...

When one variable causes change in another, we call the first variable the ___________________ variable*. The affected variable is called the _______________ variable*. When one variable causes change in another, we call the first variable the explanatory variable*. The affected variable is called the response variable*. In a randomized experiment, the researcher manipulates values of the explanatory variable and measures the resulting changes in the response variable. The different va...

Population - ANSWER-The entire group that is the target of interest, not just people. Eg, "the population of 1 bedroom apartments" Sample - ANSWER-A subgroup of the population. Eg, "the 1 bedroom apartments with dishwashers." Steps in the statistics process - ANSWER-1. PRODUCE DATA (by studying a sample of the population) 2. EXPLORATORY DATA ANALYSIS (Summarize data.) 3. PROBABILITY ANALYSIS (Determine how the sample may differ from the population.) 4. INFERENCE (draw conclusions) ...

Exploratory Data Analysis (EDA) - 4 steps - -1. Producing data 2.Exploratory data analysis 3&4. Probability and Interface Dataset - -A set of data identified with particular circumstances. Datasets are typically displayed in tables, in which rows represent individuals & columns represent variables. Quantitative Variables - -Take numerical values. and represent some kind of measurement. Categorical Variables - -Take category or label values, and place an individual into one of several grou...

AIDA 181 Study Guide 2023 with complete solution big data - sets of data that are to large to be gathered and alayszed by traditional methods 5 Vs of big data - volume variety velocity veracity value volume - far larger (consumes more storage space) than traditional data stores variety - much of the data exists in multiple unstructured (this is defined later) formats velocity - speed at which the data arrives and the rate of evolution veracity - the co...

UF STA 2023 Exam 1, Questions review sections and answers, rated A Design - -plan how to obtain the data Description - -summarize the data with graphs and numerical summaries Inference - -using data from a random and representative sample to draw conclusion about population of interest Subjects - -persons, animals, or objects in our study/experiment Variables - -the characteristics that we measure on each subject population - -ALL subjects of interest sample - -subjects fo...

Lurking Variable - Associated with the explanatory and the response variables that is not directly being studied. Simpson's Paradox - Occurs when a trend or result that appears in groups of data disappears when we combine the data. Regression Analysis - A process for estimating and analyzing the relationship between variables. Least-Squares Regression Line - AKA the line of best fit. y = mx + b "rise over run" Interpolation - Using existing data along with the Least-Squares Re...

the population) 2. EXPLORATORY DATA ANALYSIS (Summarize data.) 3. PROBABILITY ANALYSIS (Determine how the sample may differ from the population.) 4. INFERENCE (draw conclusions) Data - ANSWER-pieces of info about individuals organized into variables Individual - ANSWER-a particular person or object Variable - ANSWER-a particular characteristic of the individual Dataset - ANSWER-a set of data identified with particular circumstances. Typically displayed in tables with rows as the i...