5 Minute Check Find the mean, median and mode of the data sets. Round to the tenth. Complete in your notebook. 1. 2

Tuesday, Oct 30

5 Minute CheckFind the mean, median and mode of the data sets. Round to the tenth. Complete in your notebook.1.

2.



Mean = 33.4Median = 28Mode = 15 , 25



Mean = 85.7Median = 85Mode = 85, 100

Friday, March 20Chapter 6.11.1/6.11.2

Mean, Median and ModeMean, Median and ModeObjective: To find and interpret the mean, median and mode from a data set. Mean, Median and ModeThe mean, median and mode are called measures of center because they describe the center of a data set.

Mean, Median and ModeThe mean (or average) of a data set is the sum of the data values divided by the number of pieces of data.

It is the balance point of the data set.

Mean, Median and ModeThe mean (or average) of a data set is the sum of the data values divided by the number of pieces of data. The median of a data set is the value at the center of an ordered set, or the mean of the two central values.

Mean, Median and ModeThe mean (or average) of a data set is the sum of the data value divided by the number of pieces of data. The median of a data set is the value at the center of an ordered set, or the mean of the two central values. The mode is the number or numbers that appears most often in a data set.

Mean, Median and ModeA measure of center can not be larger than the largest data point or smaller than the smallest data point. Mean, Median and ModeDave recorded his 7 tests scores on the table. Find the mean, median and mode. Round to the tenth, if needed.

To Find the Mean.Step 1 Add the numbers in the data set.

Mean, Median and ModeDave recorded his 7 tests scores on the table. Find the mean, median and mode. Round to the tenth, if needed. 93+85+88+97+94+90+93=640

To Find the Mean.Step 1 Add the numbers in the data set.

Mean, Median and ModeDave recorded his 7 tests scores on the table. Find the mean, median and mode. Round to the tenth, if needed. 93+85+88+97+94+90+93=640

To Find the Mean.Step 2 Divide the sum by how many numbers are in the data set.

Mean, Median and ModeDave recorded his 7 tests scores on the table. Find the mean, median and mode. Round to the tenth, if needed. 93+85+88+97+94+90+93=640640 7= 91.4

To Find the Mean.Step 2 Divide the sum by how many numbers are in the data set.

Mean, Median and ModeDave recorded his 7 tests scores on the table. Find the mean, median and mode. Round to the tenth, if needed.

To Find the Median.Step 1 Order the data set from least to greatest.

Mean, Median and ModeDave recorded his 7 tests scores on the table. Find the mean, median and mode. Round to the tenth, if needed. 85, 88, 90, 93, 93, 94, 97

To Find the Median.Step 1 Order the data set from least to greatest.


To Find the Median.Step 2 Find the middle number or the mean of the two middle numbers.


To Find the Median.Step 2 Find the middle number or the mean of the two middle numbers.


To Find the Mode.Find the number, or numbers that occur most often.

Mean, Median and ModeDave recorded his 7 tests scores on the table. Find the mean, median and mode. Round to the tenth, if needed. Mean 91.4Median 93Mode - 93

Mean, Median and ModeFind the mean, median and mode of the temperatures on the graph. Round to the tenth, if needed.

Do this on your own.


Mean64.4 + 71.2 + 55.8 + 58.2= 249.6

246.6 4 = 62.4


Median55.8, 58.2, 64.4, 71.2 58.2 + 64.4 = 122.6122.6 2 =61.3


ModeSince no numbers occurmore than once, there isno mode.

Mean, Median and ModeThe dot plot shows the number of beads sold. Find the mean, median and mode.


Mean, Median and ModeThe dot plot shows the number of beads sold. Find the mean, median and mode.

Mean = 5+7+7+7+8+8=426=7Median = 5, 7, 7, 7, 8, 8= 7Mode = 7

Mean, Median and ModeThe dot plot shows the recorded high temperatures for six days in Little Rock, Ark. Find the mean, median and mode temperatures.


Mean, Median and ModeThe dot plot shows the recorded high temperatures for six days in Little Rock, Ark. Find the mean, median and mode temperatures.

Mean = 45+45+47+49+50+52=2886=48Median = 45, 45, 47, 49, 50, 53= 48Mode = 45

Mean, Median and ModeFind the mean, median and mode for the data set.



Mean = 8+5+7+12=324=8Median = 5, 7, 8, 12 = 7.5Mode = none




Mean = 8+7+6+8+9+10=486=8Median = 6, 7, 8, 8, 9,10 = 8Mode = 8




Mean = 8+10+15+12+11+8+6=707=10Median = 6, 8, 8, 10, 11,12, 15 = 10Mode = 8

Mean, Median and ModeJohn received an 85%, 86%, 91%, 88% on his math tests. What is the least he must score on the next test to have a mean (average) of at least 90%?

Do this on your own. Mean, Median and ModeJohn received an 85%, 86%, 91%, 88% on his math tests. What is the least he must score on the next test to have a mean (average) of at least 90%?

Mean = 85+86+91+88+ x = 90 5 = 450 350 + x = 450 -350 -350 x = 100 Mean, Median and ModeA stem and leaf plot organizes data from least to greatest. The stem is the first digit and the leaf is the second digit in each number.

For example, in the number 32, the 3 would be the stem and the 2 would be the leaf.

Mean, Median and ModeWhat is the mean, median and mode of the data in this stem and leaf plot?



Mean78+85+88+89+92+96= 718

718 6 = 75


Mean78+85+88+89+92+96= 718

528 6 = 88


Median78, 85,88,89,92,9688 + 89 = 88.5


ModeThere is no mode.

Mean, Median and ModeMike raked the leaves from 6 lawns. He earned $12, $10, $13, $15, and $15 for five lawns. How much did he earn the sixth time if the mean of the data is $12?


Mean, Median and ModeMike raked the leaves from 6 lawns. He earned $12, $10, $13, $15, and $15 for five lawns. How much did he earn the sixth time if the mean of the data is $12?

12 + 10 + 13 + 15 + 15 + x = 12 6

65 + x = 72 -65 -65 x = 7

Mean, Median and ModeCreate a data set that has five values where the mean is 34.

Mean, Median and ModeCreate a data set that has five values where the mean is 34. Sample answer 27, 38, 26, 39, 40

Want must sum of the value always be?

Mean, Median and ModeCreate a data set that has five values where the mean is 34. Sample answer 27, 38, 26, 39, 40

Want must sum of the values always be? 34 5 = 180

Mean, Median and ModeFind the missing number in the data set. (12, 37, 45, 18, 8, 25, 18, x)The mean of a data set 23, the mode is 18 and the median is 19.5

Mean, Median and ModeFind the missing number in the data set. (12, 37, 45, 18, 8, 25, 18, x)If the mean of a data set 23 and there are 8 numbers in the set, then they must add to 23 8, or 184.The numbers we know add to 163.

184 163 = 21The missing number must be 21.

Mean, Median and ModeThe mean of a data set 45. Find the missing numbers in the data set, (40, 45, 48, x, 54, y, 45)

Mean, Median and ModeThe mean of a data set 45. Find the missing numbers in the data set, (40, 45, 48, x, 54, y, 45)40+45+48+x+54+y+45 = 45 7 = 315 232 + x + y = 315 -232 -232 x + y = 83x and y can be any number that add to 83

Mean, Median and ModeOne evening at a pizzeria, the following number of toppings were ordered on each large pizza.3,0,1,1,2,5,4,3,1,0,0,1,1,2,2,3,6,4,3,2,0,2,1,3True or false.The greatest number of people ordered a pizza with 1 topping.

Mean, Median and ModeOne evening at a pizzeria, the following number of toppings were ordered on each large pizza.3,0,1,1,2,5,4,3,1,0,0,1,1,2,2,3,6,4,3,2,0,2,1,3True or false.The greatest number of people ordered a pizza with 1 topping. True, the mode is 1

Mean, Median and ModeOne evening at a pizzeria, the following number of toppings were ordered on each large pizza.3,0,1,1,2,5,4,3,1,0,0,1,1,2,2,3,6,4,3,2,0,2,1,3True or false.Half the customers ordered pizzas with 3 or more toppings, and half ordered pizzas with less than 3 toppings.

Mean, Median and ModeOne evening at a pizzeria, the following number of toppings were ordered on each large pizza.3,0,1,1,2,5,4,3,1,0,0,1,1,2,2,3,6,4,3,2,0,2,1,3True or false.Half the customers ordered pizzas with 3 or more toppings, and half ordered pizzas with less than 3 toppings. False, the median is 20,0,0,0,1,1,1,1,1,1,2,2,2,2,2,3,3,3,3,3,4,4,5,6

Mean, Median and ModeAgenda Notes

Homework Complete the Mid-Chapter check on page 828

Mid-Chapter Quiz Monday, March 23Ch 6.9/6.10 test Corrections due Monday

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5 Minute Check Find the mean, median and mode of the data sets. Round to the tenth. Complete in your notebook. 1. 2