Title: A group of children were asked how many hours a day they spend watching television. Post by: kyal on May 31, 2021 1. A group of children were asked how many hours a day they spend watching television. Determine the mean, mode, and median and graph it using a histogram. Please provide explanation.
Title: Re: A group of children were asked how many hours a day they spend watching television. Post by: bio_man on May 31, 2021 Content hidden
Title: Re: A group of children were asked how many hours a day they spend watching television. Post by: kyal on May 31, 2021 thank u so much how about the median and mode?
Title: Re: A group of children were asked how many hours a day they spend watching television. Post by: bio_man on May 31, 2021 Oh yeah!
Median: Add 1 + 4+ 7 +3+2+1 = 18 18 / 2 = 9 median is between the 9th and 10th observation. 1 + 4 + 7 = 11 The third row has cumulative frequency of 11 The third row passes the 9th and 10th results, so the median must be in there. Median is 2-3 hours. As is the mode, it's the one that repeats most often. Title: Re: A group of children were asked how many hours a day they spend watching television. Post by: kyal on Jun 1, 2021 I understand the 18/2 and also apparently you are supposed to do 18+1/2 = 9.5th term.
How would you find the 9.5th term with the following, you still choose the 9th term? 0.5, 1.5, 1.5, 1.5, 1.5, 2.5, 2.5, 2.5, 2.5, 2.5, 2.5, 2.5, 3.5, 3.5, 3.5, 4.5, 4.5, 5.5 another thing part of the written solution there were 1, 5, 12, 15, 17, 18 beside the number of kids column and I was confused on where they were found would you possible know? thanks Title: Re: A group of children were asked how many hours a day they spend watching television. Post by: bio_man on Jun 1, 2021 Median is 2-3 hours. I pointed out the median occurs between 2-3 hours. However, I was mistaken after looking at it further. The median occurs between 2 and 3 hours, so 2.5. Now, when working with grouped data, use a modal interval in place of a mode. The modal interval is the interval with the greatest frequency, namely 2-3 hours. I will be making a video out of this question today and sharing it with you Title: Re: A group of children were asked how many hours a day they spend watching television. Post by: kyal on Jun 1, 2021 oh ok thank you so much for doing that :)
Title: Re: A group of children were asked how many hours a day they spend watching television. Post by: bio_man on Jun 1, 2021 Here's a custom video:
https://www.youtube.com/watch?v=gu2hUhiRXv4 Please share and like, thanks Title: Re: A group of children were asked how many hours a day they spend watching television. Post by: kyal on Jun 1, 2021 thanks so much for the video it really helped
srry I have one more question if you were asked to mark the measures of central tendency on the histogram it would look something like this and even though the 2.7 isn't exactly 2.5 but it is still quite close, you would consider it as a perfectly symmetric distribution or uniform? Title: Re: A group of children were asked how many hours a day they spend watching television. Post by: bio_man on Jun 2, 2021 It doesn't look symmetric to me.
In a symmetric distribution such as the uniform distribution, the mean, median, and mode will all be equal. This is a non-symmetric or skewed distribution, where the mean, median, and mode differ. Title: Re: A group of children were asked how many hours a day they spend watching television. Post by: kyal on Jun 2, 2021 thats exactly what I thought, negatively distribution, but for some reason my teacher had mentioned today that it was uniform distribution and I wasnt sure why :/ most likely made a mistake
although mode and median are the only ones that are the same Title: Re: A group of children were asked how many hours a day they spend watching television. Post by: bio_man on Jun 2, 2021 I mean I'm just following the definition, right? They need to all be equal, and they aren't.
Title: Re: A group of children were asked how many hours a day they spend watching television. Post by: kyal on Jun 2, 2021 only 2 of them are equal but just like u said it still wouldnt be symmetric distribution but yes my teacher may have made a mistake
thanks for the help |