Q3 = 37.5 – it falls in to 40 to <45. therefore the Low limit is 40.

regards

In the You tube video for Q1 and Q3, L was the lower limit and c was the preceding class. I am a little confused.

Thanks

Karen

I have worked through the YouTube video as suggested. I have a question with the supplied answer. For Q3 L which is the lower limit of the class the answer says 40. Why is it not 35?

Thanks for your help

Karen

Re: Quartile deviation for continuous series

thanks for the email.

It is hard for me to explain the processes of how to calculate Quartile Deviation and its terminologies. However, I have found a video from YouTube, Ms Chhibber explains great details of the formula and calculation.

https://www.youtube.com/watch?reload=9&v=LD5_csmGKZ0

Let me know if you have any questions. thanks.

regards,

I am just working through the solutions and need a little help with (e) Quartile Deviation. Can you explain Q1 = L + (n/4 -c)i/f. What does L represent? Is n the cumulative frequency,what does c represent and what does i represent?

Q3 = L + (n 3/4 – c)i/f, can you explain what these represent.

Thank you, I have found that the textbook doesn’t seem to explain the quartile deviation regarding cumulative frequency very clearly.

Your help would be much appreciated.

Thank you

Karen

Thanks for the query.

On Page 89, Q3 = 3(n+1)/4 = 3×12/4 = 36/4 = 9, therefore Q3 = 65
Interquartile range = 65-18=47
Quartile deviation = 47/2=23.5

Also 898 should be 98 and 893 should be 93.

I will make an addendum in the student portal. Thanks
Regards

I am looking at the example on page 89 and am having trouble understanding how quartile three is worked out. It says 3(n+1)/4 = 3×12/4 = 8 therefore Q3 is the value of the 8th position in the arrayed data. Why doesn’t 3×12/4 = 9?  I would appreciate some help.

Thank you

Karen

Please do not post assessment questions in the forum. If you like please raise a service ticket via website or call student support for assistance.

regards

What does that mean? Advantages and disadvantages of what kind of visual presentation? Bar graphs? Or do you want all possible kinds of visual presentation? Or do you want the advantages and disadvantages of using different kinds of visual presentations?

It’s a very vague question.
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Chapter 6 (Text book) 5th Edition, Pg 143

Example 6.4 Determine the area and probability.

How do you calculate the area between the mean and the average sales?

Regards

Domenica