Instatistical research, a variable is defined as an attribute of an object of study. Choosing which variables to measure is central to goodexperimental design. Example If you want to test whether some plant species are more salt-tolerant than others, some key variables you might measure include...
Predictive validity evaluates how well a construct predicts an outcome. For example,standardizedtests such as the SAT and ACT are intended to predict how high school students will perform in college. If these tests have high predictive ability, test scores will have a strong, positive correlation ...
What is an example of descriptive statistics in a research study? Descriptive statistics examples in a research study include the mean, median, and mode. Studies also frequently cite measures of dispersion including the standard deviation, variance, and range. These values describe a data set just...
and interpreted. The information provided through the use of statistics gives insight into how and why things work. Using statistics in the way of research, evaluation, and analysis of outcomes helps everyone, from government and investment agencies to weather forecasters to geologists, make sound ...
Ironically, the possibility of a research error is what makes the research scientific in the first place. If a hypothesis cannot be falsified (e.g. the hypothesis has circular logic), it is not testable, and thus not scientific, by definition. If a hypothesis is testable, to be open to ...
Reliability is a measure of the stability or consistency of test scores. You can also think of it as the ability for a test or research findings to be repeatable. For example, a medical thermometer is a reliable tool that would measure the correct temperature each time it is used. In the...
In the second example, your audience knows exactly where the statistic comes from (if they don't believe your statistic, they can go and check themselves) and it comes from a reputable source (the U.S. Census Bureau). ...
This is then used to build or improve a profile about you (which might for example include possible interests and personal aspects). Your profile can be used (also later) to present content that appears more relevant based on your possible interests, such as by adapting the order in which ...
To compute the median for a population of variates, the variates must be arranged first in an increasing or decreasing order. The median is the middle variate if the number of the variates is odd. For example, if you have the distribution 1, 3, 4, 8, and 9, then the median is 4 ...
1998. "Social Science Research in Canada and Government Information Policy: the Statistics Canada Example." Library and information Science Research 20 (3): 211-234.Nilsen, Kirsti. (1998). Social science research in Canada and government information policy: the statistics Canada example. Library ...