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Mathematics 9 Online
OpenStudy (anonymous):

The table below shows the number of hours some college athletes in two states spend on indoor sports each week: State A 7 9 5 4 25 21 6 6 8 State B 14 12 10 13 15 14 11 15 16 Part A: Create a five-number summary and calculate the interquartile range for the two sets of data.

OpenStudy (anonymous):

Part B: Are the box plots symmetric? Justify your answer.

OpenStudy (anonymous):

Help a girl out please

OpenStudy (mathmale):

What are the 5 quantities that constitute a 5-number summary? Start by rearranging the data in ascending order in each case.

OpenStudy (anonymous):

I'm really bad at math, I've reviewed the lesson over 5 times and I don't understand what you're saying..

OpenStudy (fibonaccichick666):

So, what's the median for state A?

OpenStudy (anonymous):

7

OpenStudy (fibonaccichick666):

ok, so now, that's the hard part. So, google 5 number summary

OpenStudy (fibonaccichick666):

and tell me the components, it will be the first thing that pops up

OpenStudy (anonymous):

Five Number Summary. For a set of data, the minimum, first quartile, median, third quartile, and maximum. Note: A boxplot is a visual display of the five-number summary.

OpenStudy (anonymous):

This is what I found on 5 number summaries..

OpenStudy (fibonaccichick666):

yup, so now, what's the minimum for state a?

OpenStudy (anonymous):

4

OpenStudy (fibonaccichick666):

good, and the max?

OpenStudy (anonymous):

25

OpenStudy (fibonaccichick666):

so that's three of the 5, how do you find Q1?

OpenStudy (anonymous):

Um I'm pretty sure you exclude the median and narrow down the middle of the lower half of the data set

OpenStudy (fibonaccichick666):

mmhmm(There are 3 ways to go about it, so use what they taught you in class)

OpenStudy (anonymous):

Okay, Do I do that for the upper quartile also?

OpenStudy (fibonaccichick666):

yup, Q1 and Q3 are just the median of their respective sets

OpenStudy (fibonaccichick666):

So how do you calculate IQR from that?

OpenStudy (anonymous):

Wait, IQR?

OpenStudy (fibonaccichick666):

Interquartile range

OpenStudy (fibonaccichick666):

IQR is just easier to type/write

OpenStudy (anonymous):

Lower? The lower is 5 or 6 right??

OpenStudy (fibonaccichick666):

so tell me the data set you are finding the median of. Does it have an even or odd number of items?

OpenStudy (anonymous):

Even

OpenStudy (fibonaccichick666):

ok, and how do we find the median for an even set of data?

OpenStudy (anonymous):

Add 5 and 6 then divide by 2?

OpenStudy (fibonaccichick666):

yup

OpenStudy (anonymous):

So 5.5?

OpenStudy (fibonaccichick666):

yep

OpenStudy (anonymous):

4, 25, 7, 5.5, and 15.. That's the 5 number summary?

OpenStudy (mathmale):

Would someone care to incorporate all this discussion into step-by-step instructions? 1. Arrange the data in ascending order. 2. Determine the median. a. If the number of data points is odd, the median is the middle data value. b. If the number of data pts. is even, ..... What next? and next?

OpenStudy (anonymous):

Then add the two middle numbers together and divide by two

OpenStudy (anonymous):

Can someone help with Part B?

OpenStudy (mathmale):

We're not finished listing those steps. 3. Determine Q1 and Q3. Explain how to do this. Process is similar to that of finding the median. 4. Find the IQR (Interquartile range). How? 5. Identify the minimum and maximum of the data. Summarize the 5 data points (providing the numeric value of each) a. minimum b. Q1 c. median d. Q3 e. maximum

OpenStudy (mathmale):

For Part B you do precisely the same thing. The more work you show, the better others can respond with appropriate feedback.

OpenStudy (mathmale):

For Part A: Please complete this table: a. minimum b. Q1 c. median d. Q3 e. maximum

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