The following data show the scores gina obtained on 12 iq tests:
93, 83, 74, 74, 83, 92, 93, 94, 90, 87, 83, 86
the box plot below represents the data:
box plot has minimum value equal to 74, lower quartile equal to 83, median equal to 86.5, upper quartile equal to 89 and maximum value equal to 94
which of the following is shown incorrectly in the box plot?

the answer is:

upper quartile equal to 89.

we are given a set of values as:

93, 83, 74, 74, 83, 92, 93, 94, 90, 87, 83, 86

on arranging this data in the increasing order or ascending order we get:

74   74     83     83     83     86     87   90   92     93     93     94

the median of the data is the central tendency of the data and it lies in the middle of the data.

so, here median will lie between 86 and 87.

hence the median is:

hence, median is 86.5

the minimum value in the data is 74.

the maximum value of the data is 94.

the upper set of data is:

87   90   92     93     93     94

hence the upper quartile is the median of upper set of data.

so, here the median will lie between 92 and 93.

hence, the median is 92.5.

( since, )

so, the upper quartile is equal to 92.5.

hence, the given statement:

upper quartile equal to 89 is a false statement.

i can answer this question sweetie!

step-by-step explanation: