August 28, 2013 Keystone & Stats

August 29, 2013 Keystone & Stats

August 30, 2013 Keystone & Stats No 3 rd /4 th Period

September 3, 2013 Keystone & Stats No 3 rd /5th

September 4, 2013 Keystone & Stats

September 5, 2013 Keystone & Stats

September 9, 2013 What is the greatest common factor (GCF) of 2, 4, 14? A. 2B. 14C.28D. 112 What is the least common multiple(LCM) of 10, 18? A. 2B. 18C.90D. 180 Keystone

September 10, 2013 Keystone

September 11, 2013 Keystone

September 12, 2013 Simplify: Keystone

September 13, 2013 Simplify: Keystone

September 13, 2013 Joe’s test grades in History class are: 92, 89, 85, 89, and 90. The semester final will count as two tests. Joe needs to get a grade of 90 or higher for the semester. What is the minimum score Joe can get on the final test and average 90? Stats

September 16, 2013 Simplify: Keystone

September 16, 2013 Maggie recently took a road trip. She bought 15 gallons of gasoline for $1.68 per gallon and 12 gallons at a price of $1.76 per gallon. She filled her tank once on the way back with 16 gallons at $1.65 per gallon. What was the average fuel cost per gallon on Maggie’s trip? Instead of writing the entire question, summarize the important details! Stats

September 17, 2013 Simplify: Keystone

September 19, 2013 Evaluate: Keystone

September 19, 2013 Bob had three carries of 8 yards each and five carries of 6 yards each in a recent football game. What was his rushing average (average yards per carry)? Stats

September 20, 2013 Evaluate: Keystone

September 20, 2013 A truck was able to average only 40 mph for the first four hours of a delivery route. How long must the driver travel at a speed of 55 mph to average 50 mph for the trip? Stats

September 23, 2013 Evaluate: Keystone

September 23, 2013 Juan says that if the standard deviation of a list is zero, then all the numbers on the list are the same. Is Juan correct? If so, briefly explain why. If not, give a counterexample. Stats

September 24, 2013 Evaluate: Keystone

September 24, 2013 Would it be appropriate to say that a distribution with a standard deviation of 10 centimeters is more dispersed than a distribution with a standard deviation of 5 inches? Support your position. Stats

September 25, 2013 Simplify the following: Keystone

September 25, 2013 A set of data has a standard deviation of 9. Seventeen is added to each of the original scores in the set of data. What is the variance and standard deviation of the new set of data? Stats

September 26, 2013 Simplify the following: Keystone

September 27, 2013 Simplify the following: Keystone

September 30, 2013 Keystone

September 30, 2013 Summarize the question! Stats

October 1, 2013 Evaluate: Keystone

October 1, 2013 Using your calculator, find the mean, median, variance, and standard deviation for the following: 12, 15, 6, 18, 11, 19, 22, 23, 24, 26, 5, 17, 21, 32, 40 Mean: Median: Standard deviation: Variance: Stats

October 2, 2013 Using your calculator, find the mean, median, variance, and standard deviation for the following: 13, 2, 5, 6, 7, 8, 1, 3, 5, 6, 15, 17, 13, 14, 15, 13, 15, 2, 1, 3, 5, 3, 5, 6, 10, 6 Mean: Median: Standard deviation: Variance: Stats

October 3, 2013 Using your calculator, find the mean, median, variance, and standard deviation for the following: 17, 21, 25, 24, 23, 21, 19, 18, 24, 23, 22, 21, 25, 24, 22, 23, 24, 18, 19, 11, 15, 16, 17, 18, 24, 23, 22, 20, 22 Mean: Median: Standard deviation: Variance: Stats

October 4, 2013 Round the following numbers to the hundredths Keystone & Stats

October 7, 2013 A band just recorded a new album with 9 tracks. The shortest song on the album is 2 minutes and 21 seconds. The longest song on the album is 3 minutes and 43 seconds. What is a reasonable estimate for the total time of the album? A.54 minutes B.27 minutes C.8 minutes D.3 minutes Keystone

October 8, 2013 When Sammy goes to lunch, he can buy a sandwich for $1.16 and a soft drink for $1.89. Which is a reasonable amount that Sammy would spend on 50 sandwiches and 55 soft drinks? A.$310 B.$260 C.$160 D.$110 Keystone

October 8, 2013 Describe the different between a percentile and a percentage. A percentage score indicates the proportion of a test that someone has completed correctly. A percentile score tells us what percent of other scores are less than the data point we are investigating. Stats

October 9, 2013 Stephanie is trying to estimate the cost of gift baskets that she is going to give her 4 friends. She knows that baskets cost $6.63 each, candles cost $1.63 each, and candy bars cost $0.94 each. She is also going to get everyone a restaurant gift card for $5.00. Each basket will include the following: 1 basket 2 candles 3 candy bars 1 gift card Estimate how much money she will spend on all the gift baskets. A. $15.00 B. $76.00 C. $60.00 D. $19.00 Keystone

October 10, 2013 Keystone

October 10, 2013 Chloe scored 80% on her English test. There are 249 other students who took the same exam. No one received the same score as she did, but 113 students received a lower score. What is her percentile ranking. What percentage of students scored better than Chloe? Stats

October 11, 2013 Keystone

October 11, 2013 Find the median for the following sets of data. 3, 11, 6, 5, 4, 7, 12, 3, 10 4, 2, 11, 6, 2, 9 Stats

October 14, 2013 Keystone

October 14, , 11, 6, 5, 4, 7, 12, 3, 10 4, 2, 11, 6, 2, 9 Find Q 1 and Q 3 for the following sets of data. Stats

October 15, 2013 Keystone

October 15, 2013 Suppose you received the highest score on an exam. Your friend scored the second-highest score, yet you both were in the 99 th percentile. How can this be? Stats

October 16, 2013 Keystone

October 16 (or 17), 2013 The average 20- to 29-year-old man is 69.6 inches tall, with a standard deviation of 2.7 inches, while the average 20- to 29-year-old woman is 64.1 inches tall, with a standard deviation of 2.6 inches. Who is relatively taller, a 75-inch man or a 70-inch woman? Stats

October 17, 2013 Find the GCF. Keystone

October 18, 2013 Factor out the GCF. Factor completely. Keystone

October 21, 2013 Factor completely. Keystone

October 21, 2013 Find the mean, median, mode, range, variance and standard deviation for the following set of data USING YOUR CALCULATOR! Stats 9, 24, 8, 9, 5, 8, 9, 10, 8, 10, 15, 2, 3, 18, 20, 1, 17, 2, 19, 3 Yes…. Your calculator! If you do not have it, GO GET IT RIGHT NOW!!! You don’t have to ask today, just go! You will not be going later in the period.