Mean , median and mode t Flashcards
What is the mean of a set of numbers?
The mean is the average of the numbers, calculated by dividing the sum of all values by the number of values.
What is the median in a dataset?
The median is the middle value when a dataset is ordered from least to greatest.
What is the mode of a set of numbers?
The mode is the value that appears most frequently in a dataset.
True or False: The mean can be significantly affected by outliers.
True
Fill in the blank: The median is less affected by __________ than the mean.
outliers
How do you calculate the mean of the numbers 2, 4, 6, 8?
Add the numbers (2 + 4 + 6 + 8 = 20) and divide by the count of numbers (20 / 4 = 5).
What is the mode of the following numbers: 3, 3, 5, 7, 7, 7, 9?
The mode is 7, as it appears most frequently.
what is a characteristic of the median?
unaffected by any of the information values in the dataset.
What happens to the median if a new, extreme value is added to the dataset?
The median may not change if the new value does not affect the middle position.
True or False: A dataset can have more than one mode.
True
What is the mean of the numbers 1, 3, 3, 6, 7, 8?
The mean is 4.6667, calculated by (1 + 3 + 3 + 6 + 7 + 8) / 6.
Fill in the blank: If there are two middle numbers in a dataset, the median is the __________ of those two numbers.
half way point
Which measure of central tendency is best used for skewed distributions?
Median
What is the mode if the dataset is: 10, 20, 20, 30, 40, 40?
The modes are 20 and 40, making it a bimodal dataset.
How does one calculate the median for an even number of observations?
Order the data and take the average of the two middle numbers.
Mean mean
A type of average calculated by adding all the numbers and dividing them by the number of numbers wow
Median
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
Mode
Mode is the number that is in the sequence the most times