# Calculating things

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The median of a group of data refers to the middle-most figure in the group. It also refers to the figure that is halfway in the set. You would need to arrange your data from smallest to largest in order to find the median. Unlike a list of data, grouped data does not have individual values and calculating...

medium difficulty

Many scientific disciplines incorporate the concepts of wave frequencies and periods. Physicists, engineers and astronomers, study and work with the energy of the waves. Examples of wave energy are light waves of a distant galaxy, radio waves received by a cell phone and the sound waves of an orchestra....

medium difficulty

The capacity to calculate and convert time units, is a useful and practical skill. For example, you can calculate your monthly income, if you know your daily wage, or you can measure productivity by calculating how many times a day or a month a task is performed. You can also convert a large number of...

low difficulty

If you want to know measurements of an object in cubic meters, it's possible you may want to know how much space is needed to store such object. For example, if you want to know how tall is a container, how tall the height of a building is or even the height of a truck. Cubic meters are volume measurements...

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