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What is the closeness of a reading or measurement to the actual value of the quantity being measured?
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How are errors introduced into measurements?
inaccurate calibration insufficient control of the independent variable poor measurement techniques difficulties in reading measurements (low light, vibration, etc.) insufficient precision in measurement ambiguities in what is being measured measurement bias question bias failure to control other important variables that are not being measured (in the case of electronic measurements) interference or static
When taking skinfold measurement reading only one attempt per site is nesessary for an accurate reading?
False
Would a bird feather be measured in kilograms?
Not really, because the feather is too light to be accurately measured with an instrument indicating in kg.; it probably wouldn't even move the scale, therefore no reading, therefore no measurement!An adult human being could have their weight measured in kilograms, but a feather would more reasonably be measured in grams or perhaps milligrams. The weight of a feather could be expressed in kilograms, if it were first weighed by a sensitive instrument measuring in milligrams and then move the decimal point to express that measurement in kg. instead of mg., but most instruments used to weigh things in kilograms would likely not be accurate enough to weigh down to 0.001 or so kg.
What is positive zero error in a micrometer?
This is the measurement recorded when, in fact, it should be 0. It is the measurement when there is nothing to measure but the reading is not exactly 0 because the calibration has gone off.
How do you reduce error in measurement?
take reading 4 to 5 times, and take its average this will reduce error
The closeness of a measurement to its actual value is a measurement is called?
It's signature figures
What is the term given to the closeness with which an instrument reading approaches the true value of the variable being measured?
accuracy
Why is charge not a fundamental quantity?
Because the measurement of current is more convenient.we may take direct reading of current.
What is a example of a precision measurement is a reading of?
An example of a precision measurement is a reading of
How are errors introduced into measurements?
inaccurate calibration insufficient control of the independent variable poor measurement techniques difficulties in reading measurements (low light, vibration, etc.) insufficient precision in measurement ambiguities in what is being measured measurement bias question bias failure to control other important variables that are not being measured (in the case of electronic measurements) interference or static
What is the difference between accuracy and precision in science?
accuracy refers to how close a measurement is to the true or actual value. precision is a measure of the exactness of a measurement. so if playing darts high precision is like reproduicibility. you can get them all in the same spot. high accuracy would be scattered around the bullseye. if both then it would be close together near the bullseye.
What is meant by reading speed?
Reading speed is commonly measured as words per minute (wpm). This is the number of words absorbed by the eyes and understood by the brain per minute. It is calculated by reading a known quantity of words over a timed period. Then divide that quantity of words by the time it took to read them. This is then one's reading speed in words per minute.
What measurement scale can be used for reading and writing?
Interval
What is a measurement of time that starts with r?
reading time!!
Which reading is measured when the heartbeat ceases to be audible?
systolic
When taking skinfold measurement reading only one attempt per site is nesessary for an accurate reading?
False
What is the importance of least count?
The importance of least count ( the highest degree of accuracy of measurement) helps calculate the margin of errors when doing measurements.
