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What are the 4 types of average?

We consider there to be four types of average: mean, mode, median and range. Actually, range is a measure of spread or distribution but the others are our most common “measures of central tendency”.

transferready.co.uk - Transfer Test Worksheet: Four types of Average | TransferReady
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Did you know that there are four different types of Average?

We consider there to be four types of average: mean, mode, median and range. Actually, range is a measure of spread or distribution but the others are our most common “measures of central tendency”.

Average means Mean

The mean is what most people think of when they hear the term ‘average’. It is found by adding up all of the numbers you have, and dividing the total by how many numbers are in the data set.

Mode is Most Popular

The French word for fashion is mode. Do you remember the 1980’s electronic band, Depeche Mode? Enjoy the Silence? Well, their name was taken from a French Fashion magazine, which roughly translates as Fashion News or Fashion Update. Fashion = Popular. In conclusion, Mode means popular. The type of average known as the mode is the most commonly occurring data point in the data set. The mode has some unique features;

A data set can have more than one mode.

A data set might not contain a mode.

A mode might be qualitative, rather than quantitative – for instance, it could be a colour.

The adjective form of mode is “modal“.

Median is the middle

When you line up all the data points, in ascending order, the middle number is the median. This is much easier if there is an odd number of data points – in data sets with even numbers of data points, the median is the midpoint of the two middle numbers. Generally, in these questions, begin by re-writing the list of numbers in ascending order (from smallest to largest) and then cross off the first and last numbers, working inwards in pairs until you get to the middle number.

So, the median of these nine numbers is 7.

Range is Spread

Range is not really an average in the truest sense. It is actually a measure of how spread out a data set is. It is calculated by subtracting the smallest value from the biggest value.

So, in Summary…

Questions:

Answers:

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How many body parts can you live without?

You'll be surprised as to how much you could lose and still live. You can still have a fairly normal life without one of your lungs, a kidney, your spleen, appendix, gall bladder, adenoids, tonsils, plus some of your lymph nodes, the fibula bones from each leg and six of your ribs.

sciencefocus.com - How many organs in the body could you live without?

Asked by: Alicia Jones, Maidstone

You can still have a fairly normal life without one of your lungs, a kidney, your spleen, appendix, gall bladder, adenoids, tonsils, plus some of your lymph nodes, the fibula bones from each leg and six of your ribs. Losing your uterus, ovaries and breasts, or your testicles and prostate, is also quite survivable, although you might need hormone therapy to avoid other long-term problems, such as brittle bones. If you allow yourself artificial replacements and medication, we can go further and remove your stomach, colon, pancreas, salivary glands, thyroid, bladder and your other kidney. Still not enough for you? Theoretically, surgeons could amputate all of your limbs, and remove your eyes, nose, ears, larynx, tongue, lower spine and rectum. Supported by machines in an intensive care unit, they could also take away your skull, heart and your remaining lung, at least for a short while. This adds up to a theoretically survivable loss of around 45 per cent of your total body mass. But any trauma that destroyed all these organs all at once would almost certainly kill you from shock and blood loss. And surgically removing them one at a time over many months would likely also be fatal, due to infections in your immune-compromised state.

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