No, for a test to be valid, it must also be reliable. Reliability refers to the consistency of the test results, while validity refers to the accuracy of the test in measuring what it is supposed to measure. A test cannot be valid if it is not reliable.
In my view reliable test is always valid.
The polygraph test is not "proof-positive". The polygraph test is not completely unreliable.
No it is a urine test to look for heavy alcohol consumption. It is pretty unreliable though.
There is no such valid test, so I would definitely question it.
its because Benedict's test only gives a possible test for reducing sugars (all monosaccharides, maltose and lactose).
Yes, it would be a valid test.
No
Yes sure. It is valid. It will shows the how fast you are thinking.
A test can be reliable and not valid. A test cannot be valid and not reliable.
A bathroom scale that consistently shows your weight as 10 pounds less than your actual weight, but always produces the same result when you step on it multiple times, can be considered reliable (consistent) but not valid (accurate).
LSAT, MCAT, so on