7.7 Statistics and Statistical Plots mean= __________ mean= __________ mean = __________ median= __________ median= __________ median= __________ absolute value deviation=______ absolute value deviation=______ absolute value deviation=_____ standard deviation=_______ standard deviation=_______ standard deviation=_______ The standard deviation measures the average distance of each data value from the mean. Find the above statistics using your graphing calculator. Draw stem-­‐leaf plots for each of the above data sets. Include a key. 7.7 Statistics and Statistical Plots The Game of Risk Rules—Everyone stands. Everyone starts with a score of 3. Prior to each roll, students have the option of either sitting and keeping their accumulates points or remaining standing and gambling on the next roll. A roll of 1 cause each standing player (active player) to lose their accumulated points for that round. A roll of 2-­‐6 results in that number being added to the score for each player still standing. The round ends once a 1 comes up Record your data here: Round 1=_____ Round 2 =_______ Round 3 =______ Round 4=______ Round 5 =_______ Total =___________ Record your total and gender on the board. Males: ________________________ Females: Does there appear to be any outliers in the data sets above? __________________ MALE DATA FEMALE DATA Find the Five Number Summary Find the Five Number Summar Min= ________ Min=________ Q1= _________ Q1= _______ Median(Q2)= ______ Median(Q2)=_______ Q3=_______ Q3=_______ Max = _______ Max =_______ Interquartile Range:__________ Interquartile Range:_____________ Range:_________ Range:_________ Create parallel boxplots of the data below. Be sure to label your axis. Be sure to scale the horizontal axis correctly. 7.7 Statistics and Statistical Plots A sample was taken of the salaries of 20 employees of a large company. The following is a boxplot of the salaries (in thousands of dollars) each year.
Which of the following statements are correct? a.) The maximum salary is between $60,000 and $70,000. b.) The minimum salary is $20,000. c.) The interquartile range is about $10,000 d.) The median salary is about $40,000. e.) About 10 employees make more than $80,000