![]() ![]() 05) is used merely as a way of indicating the chances are at least 95 out of 100 that the findings obtained from the sample of people who participated in the study are similar to what the findings would be if one were actually able to carry out the study with the entire population. Inferential statistics are used to determine how likely it is that characteristics exhibited by a sample of people are an accurate description of those characteristics exhibited by the population of people from which the sample was drawn. The two major types of surveys are cross-sectional survey and longitudinal survey (trend, cohort, and panel studies). …Looking to DESCRIBE the characteristics of the population from data collected from a sample - Survey Research.…Looking at DIFFERENCES between (among) groups (i.e., males & females experiment & control) - Experimental Research (which we study in a different unit) is an example of research that looks at differences.…Looking at RELATIONSHIPS among (between) characteristics (i.e., salary & job satisfaction food consumption & energy) - Correlation Research (which we study in a different unit) is an example of research involving relationships.Statistics are used to effectively communicate numerical information to other people. We label the number of subjects (observations) in a sample with a lower case n (n=25). The data we collect from samples are called STATISTICS and are said to be INFERENTIAL (because we are making inferences about the POPULATION with data collected from the SAMPLE). The samples are used to represent the population from which they were drawn. SAMPLE–> Subsets of people are usually used to conduct studies. In this case, the researcher can only apply (generalize) his or her findings to that group. Often the TARGET population is not available, and the research must use an ACCESSIBLE POPULATIONS. The actual population to whom the researcher wishes to apply his or her findings is called the TARGET population. The first step in sampling is to define the population (3rd graders in Connecticut). We label the number of subjects (observations) in a population with an upper case N (N=300). The data (information) we collect from populations are called PARAMETERS and are said to be DESCRIPTIVE. lf we were interested in the reading level of 3rd graders in Connecticut, the population would be all third graders in Connecticut. POPULATION–> The population is the group consisting of all people to whom we (as researchers) wish to apply our findings. Therefore, the first step in sampling is to define the population. This is usually accomplished by collecting data from a sample. The main purpose of survey research is to describe the characteristics of a population. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |