Lesson #13 Mean and Median

type in mean(number set) or median(number set) in desmos

Examples

• each value in the data set shown represents the height, in centimeters, of plant: 6,10,13,2,15,22,10,4,4,4. what is the mean height, in centimeters, of these plants?

• data set A consists of 10 positive integers less than 60. the list shown gives 9 of the integers from data set A: 43,45,44,43,38,39,40,46,40. the mean of these nine integers are 42. if the mean of the data set A is an integer that is greater than 42, what is the value of the largest integer from data set A

  • type ‘f(x)=mean(43,45,44,43,38,39,40,46,40,x)’

  • type ‘y>42’

  • type ‘x<60’

  • add an x and y table and plug in values less than 60 starting with 59 in the x column until you get a full number (not a decimal)

• the median and the mean of the five integers 10,12, 26, x, x are equal. what is the sum of all possible values of x?

  • type A=[10,12,26,x,x]

  • type y=mean(A)

  • type y=median(A)

  • add the x values of the points of intersections on the line graphs together