Download Square Roots Print Activity

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Central Tendency Print Activity
Use the “Explore It” mode to answer the following questions:
1. Use the diagram below to answer the following questions:
a. The graph represents the heights of a collection of ____ artifacts.
(7/8/9)
b. The Range in the heights of the artifacts is 9 – 1 =
m.
c. The Range is defined as the __________ height – __________ height.
(largest/smallest)
(largest/smallest)
d. The ___________ represents the average height of the artifacts.
(mean/median/mode)
e. The Mean is defined as ____sum_____ = ______ =
.
f. In the diagram above, the heights have been arranged in _______________ order.
(ascending/descending)
g. The Median is the value that represents the ________________ height
(beginning/middle/end)
when the heights are arranged in order.
Junior High Math Interactives
2006 Alberta Education (www.LearnAlberta.ca)
Statistics and Probability/ Central Tendency / Object Interactive / Print Activity
Page 1 of 7
h. The Median height for this data is
.
i. The Modes are the values that occur ____________ often in a set of data.
(least/most)
j. The value of the heights that occurs most often are
and
.
2. Use the data in the diagram below to answer the following questions:
a. The graph represents the ____________ of ________ artifacts.
(length/width/height)
–
b. The range of lengths is
(2/5/10)
=
sum
c. The mean length = _________
= ______ =
# of items
m.
.
d. The lengths arranged in ascending order are ____, ____, ____, ____, ____.
e. The median length is
.
f. This data has ______________________.
(2 modes/no modes)
Junior High Math Interactives
2006 Alberta Education (www.LearnAlberta.ca)
Statistics and Probability/ Central Tendency / Object Interactive / Print Activity
Page 2 of 7
3. Use the data table below to answer the following questions:
a. The data represents the ___________________ of the artifacts.
(length/width/height)
b. The range for the widths is
–
c. The mean width is _____ =
.
=
m.
d. When the data is arranged in ascending order, the middle 2 widths are
and
.
e. When there is an ________ number of data values, the median is found by
(even/odd)
arranging the data in order and averaging the 2 data values in the middle.
f. The median width for this example is
____  ____

2
.
Junior High Math Interactives
2006 Alberta Education (www.LearnAlberta.ca)
Statistics and Probability/ Central Tendency / Object Interactive / Print Activity
Page 3 of 7
4. Use the data table below to answer the following questions:
a. There are
data values in the data table.
–
b. The range in height is
c. The mean height is ____
=
.
.
d. When the heights are arranged in order, the middle 2 heights are
e. The median height is
____  ____

2
and
.
g. The most frequent heights of the artifacts are
values represent the ___________________.
and
and these
(mean/median/mode)
Junior High Math Interactives
2006 Alberta Education (www.LearnAlberta.ca)
Statistics and Probability/ Central Tendency / Object Interactive / Print Activity
Page 4 of 7
5. The data table below represents a list of Amy’s math quiz marks.
a. Input Amy’s marks into the data table on your screen.
Data Table:
b. Using the information on your screen, draw and include ALL labels on the bar
graph below.
Graph:
c. The graph displays the math quiz marks for
d. The quizzes are graded as a mark out of
different math topics.
.
e. Amy achieved the highest quiz mark on the topic of
f. The lowest mark Amy achieved on any quiz was
.
out of 10.
Junior High Math Interactives
2006 Alberta Education (www.LearnAlberta.ca)
Statistics and Probability/ Central Tendency / Object Interactive / Print Activity
Page 5 of 7
g. The range of Amy’s marks was
h. The average mark was _____ =
–
=
.
.
i. The middle values when the marks are arranged in order are
j. The median mark is
____  ____

2
and
.
.
k. The most frequent marks Amy received were _______________.
l. Did Amy achieve a passing average on these math quizzes? _____
(yes/no)
6. A favorite music survey was conducted with students.
Use the data table and graph below to answer the following questions:
Data Table:
Graph:
a. The horizontal axis displays
different types of music on the graph.
b. The vertical axis defines the _______________ or number of students that chose
each music type.
c. The number of students who chose country as their favorite was
.
d. The number of students who chose either pop rock or heavy metal was
.
Junior High Math Interactives
2006 Alberta Education (www.LearnAlberta.ca)
Statistics and Probability/ Central Tendency / Object Interactive / Print Activity
Page 6 of 7
e.
The music type with the lowest frequency was ________________.
f.
The total number of students participating in the music survey was
.
g.
Of the 3 measures of central tendency, the __________________ have
(mean/median/mode)
meaning in this data set.
h.
Explain why.
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
7. Match the following terms with their correct definition:
a. Mean
____ the data value that occurs most often.
b. Median
____ the difference between the largest and smallest data values.
c. Mode
____ the sum of the data divided by the number of data values.
d. Range
____ the value that represents the middle when data is arranged in
order.
Junior High Math Interactives
2006 Alberta Education (www.LearnAlberta.ca)
Statistics and Probability/ Central Tendency / Object Interactive / Print Activity
Page 7 of 7