Other
Give an example of primary data.
Data that you yourself have collected.
What is a sample?
A sample is a small group chosen from a population to survey in order to find the data you need.
What is an infographic?
A visual representation of data that makes it appealing to people.
What is the mode?:
1, 0, 0, 0, 1, 1, 0, 1, 1, 1, 0, 1, 0, 1, 0, 1, 1, 0, 0, 1
1
Clayton plays basketball on a team. He has played three games so far. In the first game, he scored 10 points. In the second game, he scored 14 points. In the third game, he scored 6 points. What is Clayton's average points per game?
10 + 14 + 6 = 30 points 30 / 3 games
= 10 points per game on average
What kind of data is this?:
Sales of a new toy
Quantitative
Selecting 7 M&M's at random from a jar is an example of _______________ sampling.
Simple
_____________ graphs are used to compare two kinds of data on the same graph (Ex; boys and girls).
Double bar
Find the median: 94,568 85,890 98,290 81,223
81,223 85,890 94,568 98,290
median: 90,229
Find the range: 7, 3, 9, 3, 7, 3, 2, 7, 9, 2, 4, 6
9 - 2 = 7
range: 7
What kind of data is this?:
Most popular holiday
Qualitative
John interviews every 8th person that enters his coffee shop is an example of _______________ sampling.
Systematic
___________ graphs are best used to compare changes over time.
Line
What is the mode?:
256, 256, 64, 128, 128, 64, 32, 512, 128, 32
128
5 friends deposited $1,200, $3,300, $1,600, $2,400 and $1,500 in a bank account respectively. How big was their average deposit?
$2,000
Create a relative frequency table for the data below:
2 people vote red
6 people vote blue
8 people vote green
12 people vote yellow
2/28 = 0.071 = 7.1%
6/28 = 0.21 = 21%
8/28 = 0.29 = 29%
12/28 = 0.43 = 43%
Mme Hemmer divides her students into groups based on height and then randomly selects a student from each group. This is an example of _______________ sampling.
Stratified
Which graph would be best to show data about people's favourite desert?
Bar graph
Find the median:
6,266 6,626 6,622 6,226 6,662 6,222 7,466
6,222 6,226 6,266 6,622 6,626 6,662 7,466 median: 6,622
Find the range for the following grocery store items:
$7.16, $1.76, $1.77, $7.71, $6.61, $6.16
$7.71 - $1.76 = $5.95
range: $5.95
Describe the difference between qualitative and quantitative data.
Qualitative - data that shows a quality (ex; favourite colors, etc.)
Quantitative - data that measures a quantity (numbers, measurements, etc.)
Name the three different types of sampling techniques and give an example of each!
Simple
Stratified
Systematic
The scale
Jeremy has 2 brothers and 3 sisters. His brothers are 1 year younger and 4 years younger than him. His sisters are 1 year, 4 years and 6 years older than him. Jeremy is 9 years old. What is the median age of Jeremy and his brothers and sisters?
9.5
Four friends go bowling, their scores are: 156, 128, 134, 150. What is the average of their bowling scores?
156 + 128 + 134 + 150 = 568
568 / 4= 142