Transcript 1st Period – ACT ASPIRE

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Period – ACT ASPIRE
1. Get pencils sharpened NOW. I do not want you
doing this after the bell rings. NO MECHANICAL!
2. You only need a pencil on your desk.
1.
2.
No calculator
No scratch paper
3. Have everything ready to set in the hallway as
soon as I give you instructions to do so.
4. If you need to go to the bathroom, Go NOW.
5. When the bell rings, Get Quiet.
Bell Ringer
Find the mean of the following sets of data.
1. 45, 60, 30, 47, 45, 52, 57
2. 2, 3, 1, 4
3. 97, 98, 90, 85, 99, 96, 100
4. 7, 4, 10, 5, 2, 9, 6
Announcements
 No School on Friday
 ACT Aspire tomorrow – BE HERE
 Relay for Life
ACT Aspire Practice
13. A store is having a sale on 3 different items. Each sign
below shows the original price of an item and how to
calculate the discount for that item. Number the signs
below to place them in order from least amount of
discount to greatest amount of discount.
_________
___________
__________
ACT Aspire Practice
14. Mario and Jenna each drew a circle. Mario divided his
circle in half. Jenna divided her circle into twice as many
equal sections as Mario’s circle.
Circle the word below that names the fraction Jenna divided
her circle into, and circle all of the figures below that
could represent Jenna’s circle.
ACT Aspire Practice
15. Which of the following amounts of time is the same as 5
hours?
A. 5 hours 15 minutes
B. B. 5 hours 35 minutes
C. C. 5 hours 40 minutes
D. D. 5 hours 45 minutes
E. E. 5 hours 75 minutes
ACT Aspire Practice
16. Explain what a line of symmetry is. Explain why the
dashed line drawn in the figure below is NOT a line of
symmetry for the figure.
ACT Aspire Practice
17. After Cammy gets out of bed in the morning, she
completes several activities to get ready for school. The
list below shows the numbers of minutes she needs to
complete each of these activities.
 30 minutes: brush teeth, shower, and get dressed
 10 minutes: eat breakfast
 30 minutes: car ride to school
Cammy must be at school by 8:00 a.m. What is the latest
time Cammy can get out of bd, complete all her activities,
and still get to school on time? Explain why your answer is
correct.
Homework Check
Homework Check
Homework Check
Homework Check
Homework Check
Section 13.1
Measures of Central Tendency
R drive > Key > April 13_17 > 4_13__13.1 Measures of
Central Tendency
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Measures of Central Tendency
Vocabulary
 Measures of Central Tendency – Different ways of
describing the center of the data
 Mean – The sum of the data divided by the number of
items in the data set
 Median – The middle number of the data ordered
from least to greatest
 Mode – The number or numbers that occur most often
in a data set
Example 1
Find Measures of Central Tendency
Find the mean, median, and mode of the data in the
table.
Example 2
Find Measures of Central Tendency
The snakes at the zoo are 62, 48, 37, 45, 50, 65, 48, 54, 48, 52,
40, and 51 centimeters long. Find the mean, median, and
mode of the data.
Example 3 – Your Turn
Find Measures of Central Tendency
Find the mean, median, and mode of the data in the table.
Notes
Different circumstances determine which measures of central
tendency are most appropriate:
Measure
Most Useful When..
Mean
The data have no extreme values
(values that are much greater or
much less than the rest of the data)
Median
•The data have extreme values
•There are no big gaps in the middle
of the data
Mode
Data have many repeated numbers
Example 4
Choose an Appropriate Measure
The table shows daytime high temperatures for the previous
week. Which measure of central tendency best represents
the data? Then find the measure of central tendency.
Example 5
Choose an Appropriate Measure
The table shows the number of sit-ups Pablo had done in one
minute for the past 7 days. Which measure of central
tendency best represents the data? Justify your selection and
then find the measure of central tendency.
Example 6 – Your Turn
Choose an Appropriate Measure
Mai took a poll in her class to see how many times her
classmates visited the local amusement park during summer
vacation: 4, 0, 2, 3, 2, 4, 1, 2, 1, 2, 3, 2, 2, 0. What measure of
central tendency best represents the data? Then find the
measure of central tendency.
Example 7
Different Points of View
The average wait times for 10 different rides at an amusement
park are 65, 21, 17, 52, 25, 17, 11, 22, 60, and 44 minutes. Which
measure of central tendency would the amusement park
advertise to show that the wait times for its rides are short?
Explain.
Example 8
Different Points of View
Maggie had the following times on her runs in the 100-meter
dash: 11.6, 11.8, 12.7, 12.6, 11.9, and 12.0. Which measure of
data would she want to use to describe her performance?
Homework
Section 13.1 #1-7
Homework
Section 13.1 #1-7