Will give medal. The box plots show attendance at a local movie theater and high school basketball games:
Which of the following best describes how to measure the spread of the data?

Question

Will give medal. The box plots show attendance at a local movie theater and high school basketball games:
Which of the following best describes how to measure the spread of the data?

anonymous · Answer

The IQR is a better measure of spread for movies than it is for basketball games.
 The standard deviation is a better measure of spread for movies than it is for basketball games.
 The IQR is the best measurement of spread for games and movies.
 The standard deviation is the best measurement of spread for games and movies.

anonymous · Answer

attachment

anonymous · Answer

@mathmate

anonymous · Answer

@DanJS

anonymous · Answer

1 think its either A or C.

anonymous · Answer

still working it out? @mathmate

mathmate · Answer

@bloofoffiction 
Have you done all the common measures of spread, including
Range, IQR, absolute deviation, variance and standard deviation?

anonymous · Answer

1've doen the IQR

mathmate · Answer

and the range and standard deviation?

anonymous · Answer

what do you mean by range?

mathmate · Answer

The question compares IQR and the standard deviation, so it is evident that it's part of  your course!

anonymous · Answer

you can't actually calculate anything because there is no data chart

mathmate · Answer

range is the difference between the largest and the smallest values.

mathmate · Answer

This question is a qualitative one, so no calculator required.  Its checks the understanding of the applicability of each measure, not actually calculating it.

anonymous · Answer

theres no actual number 1 can guess

mathmate · Answer

In each box and whisker plot, you see the five values in each, right?  (the minimum, Q1, Q2(median), Q3 and the maximum).

anonymous · Answer

yes

mathmate · Answer

Do you know the significance/meaning of these values?

anonymous · Answer

yes

mathmate · Answer

So these values divide the dataset into 4 equal parts, right?
If there are 100 observations in the dataset, the number of observations between each sequential values contains 25 observations, ok so far?

anonymous · Answer

yes

mathmate · Answer

Can you tell me the possible reasons why the maximum for movies is so far to the right, or why the minimum for basketball is so far to the left?

anonymous · Answer

outliers

mathmate · Answer

exactly!
Is the IQR affected by the outliers?

anonymous · Answer

yes

mathmate · Answer

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