Why does it have the same questions as the video?

probably so we can work along with the video, or maybe so we can go back to the video if we have a question on how to solve the problem.

where has cumulative frequency been discussed?

there are dedicated sections in KA for this topic

definition of relative frequency

relative frequency as this : we have 10 glass of drinks , half of them has sugar and the other half doesnt have sugar. Now "what is the percentage of the drinks that don't have sugar? (5 drinks don't have sugar)/ (10 total of drinks) = .5 .5 is the relative frequency :) relative means (relative to all drinks) frequency means (how many drinks have or havn't sugar) in other words "relative to all drinks we have , what is the frequency (number of drinks) of sugar free drinks"

Where and why would knowing an interquartile range be useful in the real world?

The IQR is telling us how much the middle 50% of our data are spread. Large IQR means data are widely spread while small IQR means data are focused. another important use for the IQR is to detect the outliers(out of range data points). one of the rules if the data point is < Q1-1.5*IQR it is too low to be true. also if the data point is > Q3 + 1.5*IQR then it is too high to be true.

Main content

Statistics and probability

Course: Statistics and probability > Unit 4

Lesson 1: Percentiles

Cumulative relative frequency graph problem

AP.STATS:

UNC‑1 (EU)

UNC‑1.G (LO)

UNC‑1.G.4 (EK)

UNC‑1.I (LO)

UNC‑1.I.5 (EK)

Google Classroom

Nutritionists measured the sugar content (in grams) for 32 drinks at a popular coffee shop. A cumulative relative frequency graph for these data is shown below.

problem 1

An iced coffee has 15 grams of sugar.

Estimate the percentile of this drink to nearest whole percent.

start superscript, start text, t, h, end text, end superscript percentile

problem 2

Estimate the median of the distribution of drinks.
Hint: Think about the 50, start superscript, start text, t, h, end text, end superscript percentile.

median approximately equals

grams

problem 3

What is the best estimate for the interquartile range (IQR) of the distribution of drinks?

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Hardeep Saini
Posted 5 years ago. Direct link to Hardeep Saini's post “Why does it have the same...”
Why does it have the same questions as the video?
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(49 votes)
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- Kathryn Atkinson
  Posted 5 years ago. Direct link to Kathryn Atkinson's post “probably so we can work a...”
  probably so we can work along with the video, or maybe so we can go back to the video if we have a question on how to solve the problem.
  Button navigates to signup page
  (13 votes)
Maryanne Crawford
Posted 6 years ago. Direct link to Maryanne Crawford's post “definition of relative fr...”
definition of relative frequency
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(3 votes)
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- Mahmood Salah
  Posted 6 years ago. Direct link to Mahmood Salah's post “relative frequency as thi...”
  relative frequency as this :
  we have 10 glass of drinks , half of them has sugar and the other half doesnt have sugar. Now "what is the percentage of the drinks that don't have sugar? (5 drinks don't have sugar)/ (10 total of drinks) = .5
  .5 is the relative frequency :)
  relative means (relative to all drinks) frequency means (how many drinks have or havn't sugar)
  in other words "relative to all drinks we have , what is the frequency (number of drinks) of sugar free drinks"
  Button navigates to signup page
  (31 votes)
newtodisworld
Posted 6 years ago. Direct link to newtodisworld's post “where has cumulative freq...”
where has cumulative frequency been discussed?
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(13 votes)
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- RedX
  Posted 6 years ago. Direct link to RedX's post “there are dedicated secti...”
  there are dedicated sections in KA for this topic
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  (4 votes)
jdjade87
Posted 6 years ago. Direct link to jdjade87's post “Is This the same thing is...”
Is This the same thing is Cumulative Frequency Curve?
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(5 votes)
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roberto.rivera
Posted 4 months ago. Direct link to roberto.rivera's post “why is the government tak...”
why is the government taking my money?
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(5 votes)
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Excel Kolawole
Posted 3 years ago. Direct link to Excel Kolawole's post “How can i know calculate ...”
How can i know calculate a percentile in a histogram easily,like how to know the interval in question
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(3 votes)
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Daniel.L
Posted 3 years ago. Direct link to Daniel.L's post “How do you use the inform...”
How do you use the information on the graph to make a frequency table ?
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(2 votes)
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Michael Peacock
Posted 5 years ago. Direct link to Michael Peacock's post “Where and why would knowi...”
Where and why would knowing an interquartile range be useful in the real world?
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(0 votes)
Answer
- doha.tolba
  Posted 5 years ago. Direct link to doha.tolba's post “The IQR is telling us how...”
  The IQR is telling us how much the middle 50% of our data are spread. Large IQR means data are widely spread while small IQR means data are focused.
  another important use for the IQR is to detect the outliers(out of range data points).
  one of the rules if the data point is < Q1-1.5*IQR it is too low to be true.
  also if the data point is > Q3 + 1.5*IQR then it is too high to be true.
  Button navigates to signup page
  (7 votes)
Jerry Girauld
Posted 5 months ago. Direct link to Jerry Girauld's post “Still gotta get used to i...”
Still gotta get used to it
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(1 vote)
Answer
zahiya saleh
Posted 3 years ago. Direct link to zahiya saleh's post “how do we get the total e...”
how do we get the total estimate range for the distribution of drinks.
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(1 vote)
Answer