Reference no: EM133323220
Discussion 1.
Reliability measures how much you can rely on something to be consistent. Validity is an assessment tool used to evaluate that a tool is measuring what it is supposed to. They are both necessary for an experiment so that there is no doubt. However, you can have a test that is reliable and not valid, but you cannot have a valid test without it being reliable. For example, if a clock is set wrong, say 10 minutes ahead, it will always be reliable in that it will tell time, but it will not be valid because the time is incorrect.
Discussion 2.
Reliability and validity both help you know that the data that you are collecting is correct and accurate. In measuring there is some form of an instrument that is being used to measure. Reliability is knowing that the instrument is working every time that you are measuring. Validity is what we use to test that the instrument is working properly. Through reliability and validity, we will come up with the data that has been collected.
Reliability is "simply whether a test, or whatever you use as a measurement tool, measures something consistently (Salkind, N.J., & Frey, B.). Validity is "property of an assessment tool that indicates that the tool does what it says it does. A valid test is a test that measures what it is supposed to and works well for its intended purpose (Salkind, N.J., and Frey, B.). Reliability can be wrong, and it gives the wrong validity. However, there must be reliability to have the correct validity.
There are many things that I enjoy doing but cooking is one of them where reliability and validity come into play. If I want the finished product of what I am cooking to turn out good. I need to follow a recipe or my personal recipe to have the correct amount of ingredients. I need to have a reliable measuring cup. The finished product will validate and tell me if my measuring cups were correctly used, and my measurements were reliable. I also have taken many blood pressures from patients through the years. Many times, I have used an automatic dinamap as my reliability. However, if the blood pressure is too high or too low. I can validate the blood pressure reading through a manual reading.