Math POD Student Workbook

SAUSD CAHSEE Math Problem of the Day -- Week 1Steps to find the mean (a.k.a. average.)1. Add all the numbers2. Divide by the number of numbersExample:Find the average of 10, 25, 20 and 5.Step 1: 10 + 25 + 20 + 5 = ______Step 2: 60 / 4 = ______Day 1(CAHSEE Math Released Item 35)Rico’s first three test scores in biology were65, 90, and 73. What was his mean score?A 65B 73C 76D 90ANSWER: The mean is _______.Steps to find the median (a.k.a. middle)1. Write the numbers in order fromsmallest to largest.2. Find the number in the middle. If thereare two numbers then find the averageof those two numbers.Example:Find the median of 14, 20, 12 and 10.Step 1: ____, ____, ____, ____Step 2: There are two numbers in the middle (12,14). Add 12 and 14 and divide by 2.ANSWER: The median is _____Steps to find the mode (a.k.a. mostpopular)1. Write the numbers in order fromsmallest to largest.2. Find the number that is written themost times.Example:Find the mode of 7, 8, 10, 4, 8, 5, 8, 7.Step 1: 4, 5, 7, 7, 8, 8, 8, 10Step 2: The number ____ occurs the most times.ANSWER: The mode is _____Day 2(CAHSEE Math Released Item 34)Donald priced six Compact Disc (CD) players.The prices are shown below...$21.00, $23.00, $21.00, $39.00, $25.00, $31.00..What is the median price?A $21.00B $24.00C $27.00D $30.00Day 3(CAHSEE Math Released Item 37)The box below shows the number of kilowatthoursof electricity used last month at each ofthe houses on Harris Street...620, 570, 570, 590, 560, 640, 590, 590, 580..What is the mode of these data?A 560B 580C 590D 640Laura Westermeier, Ed.D. Fall 2007SAUSD, Educational Services Week 1 – Student - Page 1 of 2