Write a 1- to 2-page summary and include the following: Early in your Assignment, when you relate which dataset you analyzed, please include the mean of the following variables. If you are using the Afrobarometer Dataset, report the mean of Q1 (Age). If you are using the HS Long Survey Dataset, report the mean … Read more
The three measures of central tendency are mean, median, and mode. Each one is calculated a little different and is appropriate in different circumstances. Mean Commonly known as an average, the mean is calculated by adding all scores and dividing by the number of scores. This is the balancing point for a distribution and … Read more
The three measures of central tendency include the mean, the median, and the mode. To decide which of the three measures is best for any particular distribution, you should keep in mind that the general purpose of central tendency is to find the single most representative score (Gravetter, Wallnau, & Witnauer, 2021, pg. 76). It … Read more
While the range scores is not typically considered a reliable description of variability because it fails to address the distance between scores, it is used in certain situations. For example, the interquartile range is typically used in situations where the central tendency is measured by the median; this applies to data with extreme scores, undetermine … Read more
Hello Class, the following is an explanation of the sum of squares, variance, and standard deviation and why it is essential to understand the difference between sample statistics and population parameters. Within the field of descriptive statistics, it is important to understand and measure the amount of variability within a set of data. Variability … Read more
Linear Regression Analysis Terry Downes owns a commercial cleaning company. He has conducted a survey of customers to determine how satisfied they are with the work performed. He devised a 100-point rating scalewith 0 being poor and 100 being excellent service, selected a random sample of 14 customers, and asked them to rate the … Read more
The outcome for Chapter 14.3 states that Regression analysis is a statistical tool that is used for two main purposes: description and prediction. Based on the outcome, provide a current event of a business application using regression analysis for decision making.
Please find a REGRESSION ANALYSIS for this If a regression analysis was to be completed on body mass index (BMI), what could be an independent variable in that analysis? Why? If we could, what other independent variables should be included in the analysis? What statistic(s) would show the value of that regression in understanding BMI? … Read more
Utilize the five-step process and the following data set. The two populations are: Population A: Mean=36, SD=4 Population B: (sample of one): Raw Score=44 Set up a one-tail Z test evaluating the improvement of a score, presenting the following: Restate the research question as a research hypothesis and a null hypothesis about the populations. … Read more
The research department of an appliance manufacturing firm has developed a solid-state switch for its blender that the research department claims will reduce appliance returns under the one-year full warranty by 3%6%. To determine if the claim can be supported, the testing department selects a group of the blenders manufactured with the new switch … Read more