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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 do Zero Reading mean?
Zero reading typically refers to a measurement reading that indicates zero or no value. It can also refer to the initial reading taken before any change or activity is measured. In some contexts, zero reading may signal that the device or instrument is functioning properly and providing an accurate baseline measurement.
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 refers to how quickly a person can read and understand written text. It is typically measured in words per minute (WPM) and can vary depending on factors such as comprehension, difficulty of the material, and individual reading habits. Improving reading speed often involves techniques like skimming, scanning, and practicing regularly.
How do you measure pure water?
Pure water can be measured by using a calibrated measuring instrument, such as a graduated cylinder or a measuring cup. Ensure that the container is clean and free from any contaminants before pouring the water for measurement. Take the reading at the meniscus level to get an accurate measurement.
Direct and indirect methods of measurement in physics?
Direct measurement involves reading the quantity directly from a measuring instrument (e.g. ruler, thermometer), while indirect measurement involves using mathematical formulas or relationships to determine the quantity (e.g. using time and distance to calculate speed). Both methods have their advantages and limitations depending on the nature of the measurement being taken.
What part of the miniscus is the volume of the liquid in the graduated cylinder measured at?
The volume of liquid in a graduated cylinder is measured at the bottom of the concave meniscus. It is important to take the reading at eye level to ensure accurate measurement.
What measurement scale can be used for reading and writing?
Interval
