How to Make Frequency Table, Histogram, Polygon and Ogive

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[@BurmeseUSA]

I dont remember how many times I refer back to this video. so helpful to me. thanks .

[@helpyourmathstat]

I'm glad it helped

[@murungigeofrey7482]

Thanks I am Moses 💕🥰

[@milley1087]

Why am I lost. Where did 39 and 105 come from in the polygraph

[@itsmee1817]

I think it's because if you look at all the numbers at the bottom of the polygraph they each have a gap of 11 so how she got the 39 was she did 50-11= 39 and the for 105 she added 94+11 to get that. Hopefully that helps :)

[@mandisimavuso]

​@@itsmee1817thank you❤😊

[@zipporahwanjiru4270]

She really made me understand and learn new things about frequency

[@helpyourmathstat]

You are welcome! :)

[@elivaidahbridget7246]

Very helpful but I don’t understand where the 39 comes from ... the 39 before 50

[@noori_guk2475]

when I'm trying to find mid point on my own by adding lower limit 45 to upper limit 55 then dividing with 2 it's giving me 72.5 Can u plz tell me why?

[@helpyourmathstat]

You did 45 + 55/2 = 72.5. The correct way is 45 + 55 = 100, then 100/2 = 50. Or (45+55)/2 = 50. Thanks! - Prof. Xin from HelpYourMath

[@noori_guk2475]

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[@rajamuneeb4669]

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[@helpyourmathstat]

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[@niyahtg1860]

Why did she round the 10 to 11? Rounding is usually done to get a whole number. I am confused.

[@helpyourmathstat]

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[@elinessmutakilamfunda1417]

That's the rule... You round off wether it a whole number or decimal

[@anthonystark1514]

It's because you always have to find the ceiling of a number in statistics, so you round up. Ceiling means to round up

[@Painty67]

again Thanks my sister and more loves from pakistan

[@helpyourmathstat]

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[@omunguochieng9664]

i think you have made mistake you are not supposed to ad the no. of class but the class width on thye class limit

[@helpyourmathstat]

Please watch this video, kzbin.info/www/bejne/jF6veaFtn7WWsNU

[@Painty67]

this video very very very helhpful to me love you from Pakistan

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[@amoahbright696]

Thank you instructor. I love your pace and explanations as to which parameters to use for which graphical representation

[@helpyourmathstat]

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[@emmanuelwara9794]

Thanx very much for this resourceful illustration, it really summarized everything for me on frequency distribution....

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[@soighirdine5409]

Thank you so much,

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[@heis.vincent]

Please how did you get 39 and 105 on the frequency polygon, treat as urgent i have a test tomorrow by 9am😩😩

[@helpyourmathstat]

???

[@Odhiambozakayo]

Thank you for well explained

[@helpyourmathstat]

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[@gemechisaabera8799]

Ok teacher What is reduce formula class boundary

[@Study_knowledge05]

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[@Midnightrider.]

Thank you so much miss you were of great help to me i needed help with ogive and frequency polygon.

[@helpyourmathstat]

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[@nkwoimmanuela3826]

1:05 10 is a whole number already. Why take it to 11? I thought you only applied that rule when you have a decimal value🤔

[@abelngenda6817]

Exactly my thought too

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[@dilkisubhashini258]

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[@umaralexander]

Wow! You've solved my problem with grouped data. God bless you

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[@LizaMarieAbaño]

Thank you for sharing this, it helps a lot :)

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[@ShubhamYadav-uc2mp]

Thanks Maam :)

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[@ricemasterdragon2166]

Do i have to round for the class midpoint?

[@dinasin2745]

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[@rocketrider1405]

You always subtract 1 from the value of the LCL of the 2nd interval to obtain the UCL of the first interval if the lowest place value of your data is 'ones' as it is here ... if the data looked like 4.1, 6.7, 9.2, 12.1 ... then you'd subtract the value of the lowest place value which in this case is one tenth in order to obtain the UCL of the 1st interval.

[@chawulaninhleko]

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[@helpyourmathstat]

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[@Gotyouhomie]

Is there a decimal version?

[@angelblade3595]

This was very helpful .

[@helpyourmathstat]

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[@schelabelleus6661]

Thank you so much for your help!

[@helpyourmathstat]

You are very welcome!

[@successnicki8146]

What do I use if the number of class is not given. Please someone should give me an answer

[@anelemadiya5785]

Is it always 5 classes even if they didn't give you?

[@helpyourmathstat]

The number of classes is determined by each question. This example demonstrates with 5-classes. But you can apply this for other number of classes, such as 6-classes, 7-classes, so on.

[@elivaidahbridget7246]

Also where does the 105 come from

[@jennas6236]

where did you get 39 for the polygon chart ?

[@文军哲]

1:From the table, we know class midpoints are 50,61,72,83,94, which are also x coordinates for the polygon chart. 2:You may find out the gap between two consecutive midpoints is always 11; for example, 61-50=11, 72-61=11. 3: Therefore, we can conclude that the point before 50 is 39 ( 50-11=39).

[@wegotthis2345]

@@文军哲 oh my thank you so much for this as i have the same question.

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[@UmeshaUdari-r6m]

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[@omanjawalpita5112]

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[@mandisimavuso]

During Frequency polygon at the end where we took 39 and 105 ?

[@TrokonDavis-m1f]

At the beginning, she got the class limits be adding and subtracting 11. And in frequency polygon, after drawing your graph, you make sure you draw a line back to touch the x-axis at beginning and end of the graph at an equal distance.

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[@masuma_khatun3872]

Thank u so much!For me,it really summarized everything about frequency distribution. And You speak very nicely 😍. Love from Bangladesh 🇧🇩 🖤🖤🖤🖤🖤🖤🖤🖤🖤

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[@RougeLace]

is 10 not a whole number? why do you have to round up to 11?

[@helpyourmathstat]

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[@kiplazh]

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[@idirisxaashi5725]

Why did you add class width 10 +1 =11

[@helpyourmathstat]

For Class Width, round up the dividend to the next whole number. If your dividend is 2(whole number), 2.1, 2.2, 2.3, 2.4, 2.5... 2.9, round it up to 3.

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[@seyhamean1897]

Why10 change to 11?

[@helpyourmathstat]

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i miss physical class :((( this video help me so much

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Thank You Ma'am

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[@helpyourmathstat]

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[@sweetcancer_6963]

for some who doesn't get what the '# of classes' - the formula is k = 1 + (3.322 [Log(n)]) And for some, you need to know that the CLASS WIDTHs' formula is C = R/k where R = Max - Min divided by the k = k = 1 + 3.322 Log(n) Also, I would like to add in order to organize for huge data sets you can use the STEM & LEAF method, it's very easy and helpful when you utilize it for these ungrouped data