Question

Can someone walk me through this (or solve this) for me please?

Here is a set of scores on a math test. Find the five-number summary and draw a box-and-whisker plot for the data set.

77, 82, 86, 90, 84, 55, 51, 97, 84, 66, 94, 64, 91

Answer 1

i like arranging the data in a stem leaf plot first

Answer 2

you have a total of 13 numbers ... what's your median?

Answer 3

7?

Answer 4

you don't have to make a stem leaf plot... but you do have to arrange them in order.

Answer 5

the median is the 7th number when arranged in order

Answer 6

so which is it?

Answer 7

The median is 82. You have 6 numbers before 82, and 6 numbers after 84

Q2 = 84

Answer 8

Next you need to find the 1st quartile and 3rd quartile. Q1 and Q3.
Q1 is the median of the first 6 numbers.

Answer 9

What is Q1?

Answer 10

84?

Answer 11

The median of all 13 numbers is 84.

we call that Q2.

Q1 is the median of the first half.

Answer 12

seven

Answer 13

now the 1st six numbers are:
51, 55, 64, 66, 77, 82

Answer 14

Oh, I thought we were still on the chart you drew.

Answer 15

what's the median of these 1st six numbers

Answer 16

The chart is called a stem-leaf plot.... is just a nifty way to arrange the numbers you are given.

The tens digit is on the left side of the vertical line. the one's digit on the right