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Another name for the third quartile of a data set is the 75th percentile. It represents the value below which 75% of the data points fall, indicating the upper range of the data distribution. The third quartile is often denoted as Q3.
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The Casio fx-115 ES is a scientific calculator which you can use to calculate the first and third quartiles of a data set. To calculate the first and third quartiles, you first need to arrange the data set in ascending or descending order. Once the data set is arranged, you can use the following steps to calculate the first and third quartiles: Enter the data set into the calculator by pressing the Data/Matrix button. Once the data set is entered, press the STAT button and then the VARS button. Select the data set by pressing the number key that corresponds to the data set. Access the QUARTILE option by pressing the 5 key. Enter the number 1 to calculate the first quartile or enter the number 3 to calculate the third quartile. The calculator will display the first or third quartile of the data set. These steps can be used to calculate the first and third quartiles on a Casio fx-115 ES.
A number does not have a quartile, a set of data does. The lower quartile of a set of data set is a value, in the data set, such that a quarter of the date set are smaller and three quarters are larger. The upper quartile is defined similarly. The middle quartile, better known as the median, divides the data set in two.
The mean of the 10th and 11th values
The mean of the 19th and 20th values
No. Not if 25% of the data set are all at the maximum value.
The third quartile (Q3) of a data set is the value that separates the highest 25% of the data from the lowest 75%. It is the median of the upper half of the data when the data set is ordered in ascending order. Q3 can also be calculated as the 75th percentile, representing the point below which 75% of the data fall.