Name:_________________________
Analyzing Data & Comparing Populations Project
Create a usable survey question that yields numerical data. For example, shoe size or height in inches. Get your
survey question approved by Mrs. Holliday. Decide who is in your population (who do you want to collect data
from?) What type of sampling method you will use to collect your data? Will this type of sample yield valid or biased
data? (It’s okay if your data is not valid) Ask your question to a minimum of 10 girls and 10 boys. Record your data
below and follow the steps to analyze the data, compare the populations (boys vs. girls) and make inferences.
Survey Question:_______________________________________________________
Population:____________________________________________________________
What type of sampling method did you use to collect the data? Will this survey yield valid data why or why not?
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
Data Collection: Use the table below to collect your data.
Girls
Boys
On poster make a double dot plot to show the frequency. Make sure to label the graph.
Find the mode and the range for each data set:
Find the 5 number summary for each data set.
Mode
Range
Girls
Boys
Girls
Boys
Minimum
Minimum
1st Quartile
1st Quartile
Median
Median
3rd Quartile
3rd Quartile
Maximum
Maximum
Interquartile Range
Interquartile Range
On a poster make a double box plot. Make sure to label and title your data display.
Find the mean for each data set: (round to the tenths place) Girls:_________
Boys:_________
Find the mean absolute deviation for each data set.
Girls:
Boys:
Data
Deviation from the
Absolute
Data
Set
Mean
Value
Set
Total
MAD
Deviation from the Mean
Absolute Value
Total
MAD
Make a poster to display your work. Make sure to include the question, the data collection tables, the dot plot, the
box and whisker graph. Write a paragraph comparing the two data sets. Make sure to use data from at least 2
measures of center (mean, median, mode) and 2 measures of variation (range, interquartile range, MAD) in your
comparison. Make at least one inference or prediction about your data. Make sure the poster is neat and easy to
read. You may include a picture or illustration that goes along with the data. Your project is worth 100 points and
will be graded based on the rubric. You may use a calculator make sure to double check your calculations.
Name:__________________________________________
Class Period:_________________
Requirements
Data Collection-10 girls/10
boys
Population/Sample
10
9
8
Sample includes 20 people, data is
measureable & numerical
Population and sample are clearly defined
and labeled as bias or valid with accuracy
7
6
5
4
Sample includes less than 20 people,
data is measureable & numerical
Population and sample are defined and
labeled as bias or valid with accuracy
Measures of center
Mean, median, mode are calculated with
100% accuracy
Mean, median, mode are calculated
with 80% accuracy
5 Number Summary
5 number summaries are calculated with
100% accuracy
5 number summaries are calculated
with 80% accuracy
Double Box-and-Whisker
Plots
Box-and-whisker plots are accurately
constructed. Graph includes labels, titles
and is neatly constructed.
Box-and-whisker graphs are accurate.
Graph may be missing a label or title.
Double Dot Plots
Dot plots are accurately constructed.
Graph includes labels, titles and is neatly
constructed
Dot plots graphs are accurate. Graph
may be missing a label or title.
MAD/Measures of variation
All calculations: MAD, measures of
variation are 100% accurate
All calculations: MAD, measures of
variation are 85% accurate
Inferences/Comparisons
Comparisons are made with accuracy,
include 4 pieces of data. Inferences are
reasonable
Comparisons are made with accuracy,
include 3 pieces of data. Inferences
are reasonable
Poster
Poster includes all requirements and is
neat and easy to understand.
Neatness/Effort
Final product is neat, and clearly took a
considerable amount of time and effort
Poster includes all most all
requirements and is neat and easy to
understand.
Final product is fairly neat, and took a
considerable amount of time and
effort
Name:__________________________________________
3
2
1
0
Sample includes less than 10
people, data is not measureable
Population and sample are not
defined and labeled as bias or
valid with is inaccurate
Mean, median, mode are
calculated with less than 80%
accuracy
5 number summaries are
calculated with less than 80%
accuracy
Box-and-whiskers are
inaccurate. Graph is missing
labels, or is not neatly
constructed.
Dot plots whiskers are
inaccurate. Graph is missing
labels, or is not neatly
constructed.
All calculations: MAD,
measures of variation are less
than 85% accurate
Comparisons are inaccurate;
include less than 2 pieces of
data. Inferences are not
reasonable
Poster is missing requirements
and is neat and easy to
understand.
Final product is sloppily, and
took little time and effort or is
incomplete
Total points Earned
Points
3
2
1
0
Sample includes less than 10
people, data is not measureable
Population and sample are not
defined and labeled as bias or
valid with is inaccurate
Mean, median, mode are
calculated with less than 80%
accuracy
5 number summaries are
calculated with less than 80%
accuracy
Box-and-whiskers are
inaccurate. Graph is missing
labels, or is not neatly
constructed.
Dot plots whiskers are
inaccurate. Graph is missing
labels, or is not neatly
constructed.
All calculations: MAD,
measures of variation are less
than 85% accurate
Comparisons are inaccurate;
include less than 2 pieces of
data. Inferences are not
reasonable
Poster is missing requirements
and is neat and easy to
understand.
Final product is sloppily, and
took little time and effort or is
incomplete
Total points Earned
Points
/100
Class Period:_________________
Requirements
Data Collection-10 girls/10
boys
Population/Sample
10
9
8
Sample includes 20 people, data is
measureable & numerical
Population and sample are clearly defined
and labeled as bias or valid with accuracy
7
6
5
4
Sample includes less than 20 people,
data is measureable & numerical
Population and sample are defined and
labeled as bias or valid with accuracy
Measures of center
Mean, median, mode are calculated with
100% accuracy
Mean, median, mode are calculated
with 80% accuracy
5 Number Summary
5 number summaries are calculated with
100% accuracy
5 number summaries are calculated
with 80% accuracy
Double Box-and-Whisker
Plots
Box-and-whisker plots are accurately
constructed. Graph includes labels, titles
and is neatly constructed.
Box-and-whisker graphs are accurate.
Graph may be missing a label or title.
Double Dot Plots
Dot plots are accurately constructed.
Graph includes labels, titles and is neatly
constructed
Dot plots graphs are accurate. Graph
may be missing a label or title.
MAD/Measures of variation
All calculations: MAD, measures of
variation are 100% accurate
All calculations: MAD, measures of
variation are 85% accurate
Inferences/Comparisons
Comparisons are made with accuracy,
include 4 pieces of data. Inferences are
reasonable
Comparisons are made with accuracy,
include 3 pieces of data. Inferences
are reasonable
Poster
Poster includes all requirements and is
neat and easy to understand.
Neatness/Effort
Final product is neat, and clearly took a
considerable amount of time and effort
Poster includes all most all
requirements and is neat and easy to
understand.
Final product is fairly neat, and took a
considerable amount of time and
effort
/100