Respuesta :

mathiscool7

The first quartile (or lower quartile or 25th percentile) is the median of the bottom half of the numbers. So, to find the first quartile, we need to place the numbers in value order and find the bottom half.

375   390   398   420   434   540   588   593   

So, the bottom half is

375   390   398   420   

The median of these numbers is 394.


Hope I helped :)

A box plot has 5 data descriptions. The lower quartile of this data set 375, 390, 398, 420, 434, 540, 588, 593 is 394.

How does a boxplot show the data points?

A box plot has 5 data descriptions.

  • The leftmost whisker shows the minimum value in the data.
  • The rightmost whisker shows the maximum value in the data.
  • The leftmost line in the box shows the first quartile.
  • The middle line shows the median, also called the second quartile.
  • The last line of the box shows the third quartile.

For the given data set the lower quartile of this data set 375, 390, 398, 420, 434, 540, 588, 593 can be calculated as,

Lower quartile = (390+398)/2 = 394

Hence, the lower quartile of this data set 375, 390, 398, 420, 434, 540, 588, 593 is 394.

Learn more about Box-plot:

https://brainly.com/question/1523909

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