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Dot Plot, Histogram, pie graph
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Which graph is best if you want to see exact scores?
 
dot plot
 
pie graph
Which graph would be best to show favorite school lunch choices as parts of the whole class?
 
pie graph
 
histogram
If 50% of a pie graph is shaded, that means…
 
half the data is shaded
 
all the data is shaded
A pie graph must add up to…
 
100%
 
80%
If a slice of a pie graph is the biggest, what does that mean?
 
If a slice of a pie graph is the biggest, what does that mea
 
It represents 50%
What does a pie graph show?
 
Parts of a whole
 
dots
What is one thing a histogram does NOT show clearly?
 
Exact individual values
 
Groups of data
If you want to know how many students scored 70 or higher, what should you do?
 
Add the bars for 70 and above
 
Subtract all the bins
A histogram has the tallest bar at 80–89. What does that mean?
 
Most data values are in the 80–89 range
 
80–89 is the lowest range
Why do histogram bars touch?
 
Because the data is grouped into number ranges
 
Because the graph is broken
What does a histogram show?
 
Data in groups or intervals
 
Individual dots
If most dots are close together, the data is probably…
 
clustered
 
spread out
Why is a dot plot helpful?
 
It shows exact data values
 
It shows hides data
A dot plot has dots at 2, 3, 3, 4, 9. What do you notice?
 
9 may be an outlier
 
9 is the mode
If one number has the tallest stack of dots, what does that usually show?
 
The mode
 
The mean
What does each dot usually represent on a dot plot?
 
one data point
 
one bar
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