1. Frequency & histograms cc-33
OBJECTIVE: TO MAKE AND INTERPRET FREQUENCY TABLES AND HISTOGRAMS.
ANDRE TAPANES
AMANDA
DANIELA PARADA
KEVIN

2. VOCABULARY:
FREQUENCY: THE NUMBER OF DATA VALUES IN AN INTERVAL.(HOW MANY TIMES THAT NUMBER APPEARS IN THAT RANGE OF NUMBERS)
FREQUENCY TABLE: GROUPS A SET OF DATA VALUES INTO INTERVALS AND SHOWS THE FREQUENCY FOR EACH INTERVAL.
HISTOGRAM: IS A GRAPH THAT CAN DISPLAY DATA FROM A FREQUENCY TABLE
CUMALATIVE FREQUENCY TABLE: SHOWS A NUMBER OF DATA VALUES THAT LIE IN OR BELOW A GIVEN INTERVAL

3. NOTES:
WHEN YOU’RE MAKING A FREQUENCY TABLE YOURE BASICALLY JUST GETTING THE NUMBERS THAT FALL INTO THE RANGE YOU CHOOSE(OR THAT WAS GIVEN TO YOU)
EX: 150, 126, 139, 144, 125, 149, 133, 140, 142, 149, 150, 127, 130
STEP 1: ORDER THEM IN NUMERICAL ORDER.
125, 126,127, 130, 133, 139, 140, 142, 144, 149, 149, 150, 150.
STEP 2: SET A RANGE OF NUMBERS TO ORDER
; ;

4. NOTES:
125, 126,127, 130, 133, 139, 140, 142, 144, 149, 149, 150, 150.
STEP 3: MAKE THE CHART
STEP 4: FILL IN THE BLANKS ACCORDING TO THE NUMBERS
RANGE
FREQUENCY
RANGE
FREQUENCY 5 4

5. Histogram Notes: KNOW- A set of data values.
NEED- A histogram of the data values.
PLAN- Make a frequency table. This will help you construct the histogram.

6. Practice:
1. The quiz scores earned by 20 students are listed below. What is a frequency table that represents the data?
9,8,5,8,10,3,6,7,6,7,8,10,8,5,7,9,7,8,4,9

7. Answer:
SCORE
FREQUENCY
1-2
3-4 2
5-6 4
7-8 9
9-10 5

8. INTERACTIVE PROBLEMS:
1. 135, 211, 220, 180, 175, 161, 246, 201, 192, 167, 235, 208

9. NEW ACTIVITY
108, 90, 96, 150, 120, 115, 135, 126, 165, 155, 130, 125, 100

10. GRAPH THIS!
150, 126, 139, 144, 125, 149, 133, 140, 142, 149, 150, 127, 130