1st Period – ACT ASPIRE Get pencils sharpened NOW. I do not want you doing this after the bell rings. NO MECHANICAL! You only need a pencil on your desk. No calculator No scratch paper Have everything ready to set in the hallway as soon as I give you instructions to do so. If you need to go to the bathroom, Go NOW. When the bell rings, Get Quiet.

Find the mean of the following sets of data. Bell Ringer Find the mean of the following sets of data. 45, 60, 30, 47, 45, 52, 57 2, 3, 1, 4 97, 98, 90, 85, 99, 96, 100 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? 5 hours 15 minutes B. 5 hours 35 minutes C. 5 hours 40 minutes D. 5 hours 45 minutes 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 File > Save As > P drive > Math > April 13_17 > 4_14__13.1 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 Measure Most Useful When.. Mean Median Mode 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