Sampling Methods
Stem and Leaf Plot
Mean, Median, Mode & Range
Box and Whisker Plot
Displaying Data
100

What is random sampling?

by chance or completely random

100

At what place value do we separate the number in order to correctly place it on a stem and leaf plot?

between the tens and ones

100

What is the mode?

the number that occurs the most

100

What pieces of information do you need in order to plot a box and whisker on a number line? (name the 5)

smallest value

largest value

median

Q1

Q3

100

True or false... on a histogram do the bars need to be touching? 

True! That is what makes it a histogram rather than a bar graph

200

What is systematic sampling?

according to a rule or system

200

List the values from the stem and leaf plot


20, 21, 24, 29, 31, 32, 32, 33, 38, 43, 49, 51, 51, 51, 54, 56

200

What is the median?

The number in the middle after putting them in least to greatest order

200

Name the values in the box and whisker plot. 

smallest: 13

lower Q: 16

median: 20.5

upper Q: 23

largest: 23.5

200

True or false.... A line graph shows changes over time? 

True!

300

What is stratified sampling?

a group within another sub group

300

List the values in the stem and leaf plot. 


68, 75, 77, 79, 80, 82, 92, 96, 96, 97

300

What is the mean?

The sum of all the numbers divided by the number of values

300

Name the values in the box and whisker plot.


smallest: 10

lower Q: 25

median: 35

upper Q: 45

largest: 60

300

What are the 3 types of correlation?

positive, negative and none

400

Identify the sample method. 

An exit poll is taken of every tenth voter.

systematic

400

What is the range?

the difference between the highest and lowest value

400

Label the box and whisker plot. 

smallest value

largest value

median

Q1 and Q3


400

What is the correlation of the plot?


positive

500

Identify the sample method.

Fifteen classes are randomly chosen. Ten students are chosen from each class.

stratified

500

Find the mean, median, mode and range of this set of data. 15, 10, 12, 10, 13, 13, 13, 10, 3

Mean: 11

Median: 12

Mode: 10 and 13

Range: 12

500

About how many sales happened when it was 22 degrees? 


about $500