Quantitative scales of measurement learning objectives: list and describe the four types of scales of measurement used in quantitative research provide examples of uses of the four scales of measurement 4 levels of measurement in social science research. A central concept in statistics is level of measurement of variables it’s so important to everything you do with data that it’s usually taught within the first week in every intro stats class. Nominal level of measurement the nominal level of measurement is the lowest of the four ways to characterize data nominal means in name only and that should help to remember what this level is all about.
The level of measurement of each variable determines the type of statistic that can be used to answer a research question or test a hypothesis the higher the level of measurement, the greater the flexibility the researcher has in choosing statistical procedures. In designing research, there can be tradeoffs between having data that are at a higher level of measurement and other considerations aggregate data (data about groups of people) are generally interval or ratio, but usually provide only indirect measures of how people think and act. Level of measurement pop quiz identify the following as nominal level, ordinal level, interval level, or ratio level data 1 flavors of frozen yogurt _____.
Nominal: categorical data and numbers that are simply used as identifiers or names represent a nominal scale of measurement numbers on the back of a baseball jersey and your social security number are examples of nominal data. Research design & scales of measurement research process: 1) ask research question(s) 2) develop hypotheses scales/levels of measurement be careful w/ numeric coding of nominal and ordinal scale data scales of measurement form a hierarchy: interval ordinal. We use your linkedin profile and activity data to personalize ads and to show you more relevant ads you can change your ad preferences anytime. Data and levels of measurement one of the trickiest parts of the g544 approaches and research methods in psychology exam is making sure you follow the directions provided with the question many people have problems with directions regarding levels of measurement, for example: ‘use ordinal data. Levels of measurement various measurement methods produce data that are at different levels of measurement the traditional levels of measurement were developed by stevens (1946), who organized the rules for assigning numbers to objects so that a hierarchy in measurement was establishedthe levels of measurement, from low to high, are nominal, ordinal, interval, and ratio.
Start studying levels of measurement: nominal, ordinal and interval data [research methods] learn vocabulary, terms, and more with flashcards, games, and other study tools. An understanding of the four levels of measurement that can be taken by researchers the ability to distinguish between comparative and non-comparative measurement scales, and a basic tool-kit of scales that can be used for the purposes of marketing research. Investigate 3 different research questions and the appropriate data one needs to collect for each, including the level(s) of the data to be collected for each question share with the other students, your research questions and the level(s) of the data to be collected for each. Likert scale data can, in principle, be used as a basis for obtaining interval level estimates on a continuum by applying the polytomous rasch model, when data can be obtained that fit this model in addition, the polytomous rasch model permits testing of the hypothesis that the statements reflect increasing levels of an attitude or trait, as.
The levels of measurement differ both in terms of the meaning of the numbers used in the measurement system and in the types of statistical procedures that can be applied appropriately to data measured at each level. 1 research methods & data analysis levels of measurement we use numbers in many different ways, they are symbols that can be used in a very vague way or in a very precise manner. Level vi: evidence from a single descriptive or qualitative study level vii: evidence from the opinion of authorities and/or reports of expert committees above information from evidence-based practice in nursing & healthcare: a guide to best practice by bernadette m melnyk and ellen fineout-overholt 2005, page 10. The level of measurement used for the research variable determines the type and robustness of the statistical tech-niques that can be used to analyze the data.
Similarly, the precision or accuracy of the measurement used can lead to differing outcomes of research findings, and it could potentially limit the statistical analyses that could be performed on the data collected. One concept that applies to both research and statistics is “levels of measurement” indeed, different levels of measurement depending on how data are collected for example, the chapter 9 ♦ descriptive and multivariate statistics and % %. Nominal the lowest measurement level you can use, from a statistical point of view, is a nominal scale a nominal scale, as the name implies, is simply some placing of data into categories, without any order or structure.
Nominal data levels of measurement a nominal variable is one in which values serve only as labels, even if those values are numbers for example, if we want to categorize male and female respondents, we could use a number of 1 for male, and 2 for female. This quiz and corresponding worksheet will help you gauge your knowledge of the scales of measurement in research topics on the quiz include what a variable is and particular examples of a. Converting data to another level of measurement data usually is converted to a lower level of measurment rather than a higher level continuous data converted to ordinal or nominal - eg age to age groups. Level of measurement refers to the particular way that a variable is measured within scientific research, and scale of measurement refers to the particular tool that a researcher uses to sort the data in an organized way, depending on the level of measurement that they have selected.
In levels of measurement, i explain the meaning of the four major levels of measurement: nominal, ordinal, interval and ratio then we move on to the reliability of measurement, including consideration of true score theory and a variety of reliability estimators. As a member, you'll also get unlimited access to over 75,000 lessons in math, english, science, history, and more plus, get practice tests, quizzes, and personalized coaching to help you succeed. Research skills: levels of measurement graham hole, february 2011 page 2 the wason task - an example of nominal data: in the wason card sorting practical, the data were measurements on a nominal scale of. Levels of measurement [ home ] [ construct validity ] [ reliability ] [ levels of measurement ] [ survey research ] [ scaling ] [ qualitative measures ] [ unobtrusive measures ] the level of measurement refers to the relationship among the values that are assigned to.