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By using the basic definition of a quartile. Sort the data, count how many there are in total, then count off one quarter of that. For example, if you have 80 data items, count off the first 20 items (after sorting).

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12y ago

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Related Questions

What is a lower quartile?

A lower quartile i s the mediaon of the lower half of a data set. A data set is divided up into different quartiles.


What is it called when you calculate by subtracting the smallest value in the data set from the largest value in the data set?

The range.


What is the median of the lower half of a data set called?

It is the lower quartile.


How do you calculate the range of data?

You take the largest number in the Set of data and then subtract it from the smallest number in that data


How do you do LQ and UQ?

LQ (Lower Quartile) and UQ (Upper Quartile) are statistical measures that divide a data set into four equal parts. To calculate LQ, arrange the data in ascending order and find the median of the lower half of the data. For UQ, find the median of the upper half of the data. These quartiles help to summarize the distribution and identify the spread of the data.


How do you calculate the first and third quartiles on a Casio fx-115 es?

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.


How do you get the lower class boundary of the median?

The median is the middle number in a data set. The lower class boundary is the first quartile or number that is 25 percent lowest in the data set.


How do you calculate a moving average?

To calculate a moving average, you add up a set number of data points and then divide by the total number of data points in the set. This helps to smooth out fluctuations in the data and show a trend over time.


What is the average uncertainty formula used to calculate the overall variability in a set of data points?

The average uncertainty formula used to calculate the overall variability in a set of data points is the standard deviation.


What is the mean absolute deviation of the data set shown?

To calculate the mean absolute deviation (MAD) of a data set, first find the mean of the data. Then, subtract the mean from each data point to find the absolute deviations. Finally, take the average of these absolute deviations. If you provide the specific data set, I can help calculate the MAD for you.


What are the upper and lower quartiles of the data set?

The upper quartile is the value such that a quarter of the data are greater than that value. Similarly, the lower quartile is the value such that a quarter of the data are lower than that value.


What is a data value that is much lower or higher than the other data in a set?

It may be an outlier.