Mean , median and mode t Flashcards

1
Q
A
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2
Q

What is the mean of a set of numbers?

A

The mean is the average of the numbers, calculated by dividing the sum of all values by the number of values.

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3
Q

What is the median in a dataset?

A

The median is the middle value when a dataset is ordered from least to greatest.

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4
Q

What is the mode of a set of numbers?

A

The mode is the value that appears most frequently in a dataset.

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5
Q

True or False: The mean can be significantly affected by outliers.

A

True

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6
Q

Fill in the blank: The median is less affected by __________ than the mean.

A

outliers

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7
Q

How do you calculate the mean of the numbers 2, 4, 6, 8?

A

Add the numbers (2 + 4 + 6 + 8 = 20) and divide by the count of numbers (20 / 4 = 5).

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8
Q

What is the mode of the following numbers: 3, 3, 5, 7, 7, 7, 9?

A

The mode is 7, as it appears most frequently.

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9
Q

what is a characteristic of the median?

A

unaffected by any of the information values in the dataset.

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10
Q

What happens to the median if a new, extreme value is added to the dataset?

A

The median may not change if the new value does not affect the middle position.

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11
Q

True or False: A dataset can have more than one mode.

A

True

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12
Q

What is the mean of the numbers 1, 3, 3, 6, 7, 8?

A

The mean is 4.6667, calculated by (1 + 3 + 3 + 6 + 7 + 8) / 6.

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13
Q

Fill in the blank: If there are two middle numbers in a dataset, the median is the __________ of those two numbers.

A

half way point

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14
Q

Which measure of central tendency is best used for skewed distributions?

A

Median

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15
Q

What is the mode if the dataset is: 10, 20, 20, 30, 40, 40?

A

The modes are 20 and 40, making it a bimodal dataset.

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16
Q

How does one calculate the median for an even number of observations?

A

Order the data and take the average of the two middle numbers.

17
Q

Mean mean

A

A type of average calculated by adding all the numbers and dividing them by the number of numbers wow

18
Q

Median

A

Median sounds like middle middle is because the median is calculated by finding the number in the middle when numbers aligned up in number order

19
Q

Mode

A

Mode is the number that is in the sequence the most times