Your follow up posts should be at least 100 words, and MUST be in your own words.
Grove, S. K. (2007). Statistics for health care research: A practical workbook. Edinburgh: Elsevier Saunders.
Topic 1 DQ 1: How can graphics and/or statistics be used to misrepresent data? Where have you seen this done?
Statistics are used everywhere, every day to represent a multitude of data, or study sample. Sample characteristics are the traits that depict the study sample and can be portrayed in either some type of table or in an article (Grove, 2007). “Descriptive statistics are used to generate sample characteristics, and the type of statistic used depends on the level of measurement or the demographic variables included in the study” (Grover, 2007, p.75). It is this information and data that is presented can be misrepresented, either unethically or simply because the data is misunderstood. According to Statistics (2013), data can be misrepresented three ways: 1) misunderstanding the data presented, 2) using incomparable definitions, and 3) by deliberately misinterpreting the data presented, especially if it is a biased representation. An example of misunderstanding the data presented could be someone that is researching crime statistics in an area where they are looking to relocate and raise a family; if they do not understand the manner in which the data is being presented, it could be more than easy for them to misunderstand it, this can even apply to the person who wrote the article or table on the data, unknowingly in this situation. An example of using incomparable definitions typically occurs when data is compared from two different sources. Global warming is a topic that many different scientists have researched and published their data, so if someone presenting this data used two different sources, the definitions and sample characteristics might not be the same, essentially making the data invalid due to its misrepresentation. Lastly, an example of deliberately misrepresenting data could be when politicians intentionally manipulate charts, graphs, and articles due to their bias to win the election.
Grove, S. K. (2007). Statistics for health care research: A practical workbook. Edinburgh: Elsevier Saunders
Statistics: Power from Data! Misinterpretation of statistics. (2013). Retrieved from http://www.statcan.gc.ca/edu/power-pouvoir/ch6/misinterpretation-mauvaiseinterpretation/5214805-eng.htm
Topic 1 DQ 2: What are the characteristics of a population for which it would be appropriate to use mean/median/mode? When would the characteristics of a population make them inappropriate to use?
Mean, median, and mode are analysis techniques that are used to describe the variables in a study by measuring and calculating the central tendency in order to determine the data in regards to the center of distribution (Grove, 2007). The mode can be defined as the score of distribution that occurs more frequently than the others. The median can be defined as the score that is in the middle of a list of values that is rank ordered and is considered to be the most precise way to measure the central tendency for several different data, such as: ration level data, non-normally distributed or skewed data, and ordinal level data (Grove, 2007). Lastly, the mean is defined as the mathematical average of all of the different scores that were obtained in the sample, and is considered to be the best way to get an accurate central tendency for data and interval ratio levels that were normally distributed.
Mean, median, and mode would be best resulted on a population that has the ability to accurately provide samples, such as a group of people that will not skip out on participating, that the test and sample can be