Displaying Data Ed

Displaying Data

• RAW DATA is just a group of unorganized numbers about something.

Here is a list of points made per game for Joe: 12, 13, 14, 15, 16, 17, 12, 13, 14, 15, 17, 12, 12, 13, 13, 14, 15, 13, 13

Points Frequency Table is Per used when a data game value can repeat 12 many times. 13

How many Frequency times

IIII

4

IIIIII

6

14

III

3

15

III

3

16

I

1

17

II

2

• Stem & Leaf Plot organizes data by place-values. Take out the golf measurement from Last week.

• The Stem is the first digit or digits in the number. • The Leaf is the last digit in the number.

STEM

LEAF

• Box & Whisker Plot This is like the number line we created.

FINALLY, mark the lowest NEXT, find the MEDIAN of the Draw FIRST and DoMEDIAN, the highest a make rectangle sameand values, athing number above for and the line the Find the draw a line Group of numbers below “Q2”, that connect Group includes of line them numbers with alltothe “Q1” theabove values box and there.Number Label it “Q2” Label it “Q1” “Q3” inwith “Q2”. your at a Label line. the set. ends. this “Q3”

• Each of the Q’s you labeled are called quartiles.

• If you think there is an outlier, mark it with a star, and don’t include it with the other data.

• Let’s make two box and whisker plots on the same number line, comparing the chip shots from 25 feet and 50 feet.

• A BAR GRAPH is used to compare different groups. 20 B O 15 X E S 10 S O L D

5

Sally Foster Candy Boxes TheSold space between

The numbers is called the INTERVAL. Each INTERVAL must be the same!!! Joe John Judy Jose Hunter

• A LINE GRAPH is usually used to show change over time.

Highlands