FAQs
For example, if you measure a cup of rice three times, and you get the same result each time, that result is reliable. The validity, on the other hand, refers to the measurement's accuracy. This means that if the standard weight for a cup of rice is 5 grams, and you measure a cup of rice, it should be 5 grams.
What is an example of validity vs reliability? ›
A simple example of validity and reliability is an alarm clock that rings at 7:00 each morning, but is set for 6:30. It is very reliable (it consistently rings the same time each day), but is not valid (it is not ringing at the desired time).
What is an example of reliability and validity in everyday life? ›
Another example could be a bathroom scale. A reliable scale would give you the same reading each time you step on it, even if the reading is not an accurate reflection of your actual weight. A valid scale, on the other hand, would give you an accurate reading of your weight.
What two answers best describe the difference between validity and reliability? ›
Reliability vs. Validity in Research | Difference, Types and Examples
| Reliability | Validity |
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What does it tell you? | The extent to which the results can be reproduced when the research is repeated under the same conditions. | The extent to which the results really measure what they are supposed to measure. |
2 more rowsJul 3, 2019
What is an example of validity? ›
Validity refers to whether a test measures what it aims to measure. For example, a valid driving test should include a practical driving component and not just a theoretical test of the rules of driving.
What is an example of something that is reliable and valid? ›
For example, if you measure a cup of rice three times, and you get the same result each time, that result is reliable. The validity, on the other hand, refers to the measurement's accuracy. This means that if the standard weight for a cup of rice is 5 grams, and you measure a cup of rice, it should be 5 grams.
What are examples of validity and reliability in assessment? ›
For a test to be reliable, it also needs to be valid. For example, if your scale is off by 5 lbs, it reads your weight every day with an excess of 5lbs. The scale is reliable because it consistently reports the same weight every day, but it is not valid because it adds 5lbs to your true weight.
What is an example of valid but not reliable? ›
A measurement maybe valid but not reliable, or reliable but not valid. Suppose your bathroomscale was reset to read 10 pound lighter. The weight it reads will be reliable(the same every time you step on it) but will not be valid, since it is notreading your actual weight.
What is reliability vs validity for dummies? ›
Reliability and validity are both about how well a method measures something: Reliability refers to the consistency of a measure (whether the results can be reproduced under the same conditions). Validity refers to the accuracy of a measure (whether the results really do represent what they are supposed to measure).
What is a short example of reliability? ›
You have a reliable measurement if you dip the thermometer into the water multiple times and get the same reading each time. This tells you that your method and measurement technique consistently produce the same results, whether it's you or another researcher performing the measurement.
Can a test be valid but not reliable? A valid test will always be reliable, but the opposite isn't true for reliability – a test may be reliable, but not valid. This is because a test could produce the same result each time, but it may not actually be measuring the thing it is designed to measure.
How to ensure validity and reliability in research? ›
To ensure validity and reliability, it is important to define your research question and hypothesis clearly and logically, choose your data collection method and instrument carefully, pilot test your data collection method and instrument, collect data from a representative and adequate sample size, analyze data using ...
How to check reliability and validity of questionnaire? ›
There are different ways to estimate the reliability of a questionnaire including: (1) Test-Retest reliability that is estimated by calculating the correlations between scores of two or more administrations of the questionnaire with the same participants; (2) Parallel-Forms reliability that is estimated by creating two ...
How do you demonstrate validity? ›
Validity can be demonstrated by showing a clear relationship between the test and what it is meant to measure. This can be done by showing that a study has one (or more) of the four types of validity: content validity, criterion-related validity, construct validity, and/or face validity.
What is an example of a validity argument? ›
In effect, an argument is valid if the truth of the premises logically guarantees the truth of the conclusion. The following argument is valid, because it is impossible for the premises to be true and the conclusion nevertheless to be false: Elizabeth owns either a Honda or a Saturn. Elizabeth does not own a Honda.
What is poor validity examples? ›
For instance, if I wanted to measure aerobic running performance then a measure of someone's fifty metre swim time would have poor validity, whereas a measure of the time it took for them to run five kilometres would be much more valid.
What is sample valid and reliable? ›
Reliability refers to the consistency and stability of the data, while validity is concerned with the accuracy and credibility of the data. To ensure the reliability and validity of the sample data, it is important to consider the sampling method, sample size, sampling frame, and response rate.
What is an example of validity and reliability instrument? ›
As with validity, reliability is an attribute of a measurement instrument – for example, a survey, a weight scale or even a blood pressure monitor. But while validity is concerned with whether the instrument is measuring the “thing” it's supposed to be measuring, reliability is concerned with consistency and stability.
What is an example of a test reliability? ›
Test Reliability
Reliability measures consistency. For example, a scale should show the same weight if the same person steps on it twice. If a scale first shows 130 pounds then shows 150 pounds after five minutes, that scale is not reliable, nor is it valid.