Mean, Median, Mode, Range
Qualitative vs. Quantitative
Frequency Tables
Graphs
RANDOM
100
What is the mode?
3, 6, 7, 8, 9, 3
3 (most often)
100
What is the difference between quantitative and qualitative data? Provide an example of each.
Quantitative: numerical data (counting or measuring)
Qualitative: non-numerical data (can be organized in categories)
100
Calculate the fraction for the relative frequency of chocolate.
Chocolate:
7/20
100
Is a bar graph a good choice for displaying this data? Why or why not?
No because the data has small differences that are hard to read in a bar graph.
100
What is 100 + 100?
200
200
What is the median?
15, 14,14, 10, 19
14
10, 14, 14, 15, 19
200
Is the following data quantitative or qualitative?
Test Scores:
58%,60%, 77%, 80%, 81%, 95%,
Quantitative (numerical)
200
Calculate the decimal for the relative frequency of swimming.
Swimming: 0.40
200
What do you notice from this graph?
- Spend same amount of time reading on Mondays
- Brother spends significantly more time reading on Wednesdays
- Sarah reads more on Tuesdays and Thursdays
200
Sarah asked everyone their favourite colour.
Is this primary or secondary data?
primary
300
What is the range?
2, 4, 5, 8, 6, 6
8-2 = 6
300
Is the following data quantitative or qualitative?
Favourite Chocolate Bar:
Kit Kat, Hersheys, Smarties, Coffee Crisp
Qualitative: non-numerical (categories)
300
Calculate the percentage for the relative frequency of dogs.
Dog: 60%
300
How many more students chose a dog as their favourite pet than a hamster?
Dog - Hamster
= 8 - 5
= 3
300
John use the internet to find information.
Is this primary or secondary data?
secondary
400
What is the mean?
15, 13, 15, 16, 19, 21
15 + 13 + 15 + 16 + 19 + 21
= 99 divided by 6 (number of numbers in the set)
16.5
round to the nearest whole number - 17
400
Will the data collected from the following question be quantitative or qualitative?
What is the average temperature outside each day of March?
Quantitative (numerical)
400
What conclusions can you draw from this frequency table?
- Most students walk home from school.
- The fewest students bike home from school.
- Almost as many students drive as walk home from school.
400
Compare the similarities and differences between these two graphs. What do you notice?
- Both graphs have the same data
- The graph on the right shows the break-down of spending each month by category
400
How many sides does a nonagon have?
9
500
Find the mean - 35, 22, 43, 35
135 divided by 4 = 33.75 round to 34
500
Will the data collected from the following question be quantitative or qualitative?
What is your favourite brand of running shoe?
Qualitative (non-numerical)
500
Analyze the chart. Describe any trends or patterns that you notice.
- Sales start off strong, then decrease Tues & Wed, then increase Thurs & Fri
- Nearly 50% of the sales occur on Thurs & Fri
- Significant increase in sales from Wed to Thurs
500
How much money did Ariel raise over all four weeks?
$10 + $25 + $20 + $35
= $90
500
What is the only number that has the same number of letters as it’s meaning?
Four