Terminology
Statistics Canada collects data on population figures once every 5 years. Is this an example of a census or a sample?
Census
Biased or unbiased?
Joseph wants to find out the average number of hours households spend on the Internet every day. He conducts an ONLINE survey with 100 random families.
Biased; he is more likely to survey households that are already using the Internet regularly.
How many months of the year have 28 days?
All of them (12)
What type of graph is useful for comparing a part of a set of data to the whole.
Circle graph
Is a random sample biased or unbiased?
Unbiased
An electronics company mailed out 1000 questionnaires to its database of customers to find out their favourite brand of washing machine. Is this an example of a census or a sample?
Sample
Lea wants to know the most common car colour that passes through a certain intersection. She records the colours of 1000 random cars along the traffic junction during different hours of the day.
Unbiased; she selected a random sample of cars during different hours of the day.
I go all around the world, but never leave the corner. What am I?
stamp
Question 18
symmetrical
Question 20
Mean: 90.4
Median: 92
Mode: 92
A dot plot is __________ when most of the data are distributed around the centre and the two ends are evenly distributed.
Symmetrical
What sampling method is this an example of:
A restaurant owner would like to find out their customers’ favourite dessert offering. They plan to interview every fifth customer that comes to the restaurant.
systematic random sampling
It belongs to you, but your friends use it more. What is it?
Your name
Question 19
skewed to the right, outlier is 8
What was the hardest math concept to learn this year?
any answer you give me, as long as we learned it this year.
An __________ is a representation of data in a graphic format.
infographic
What type of random sampling is this:
A university professor would like to learn the number of engineering students who are employed within 3 months of graduation by surveying 500 engineering students based on the percent of students in each engineering field.
stratified random sampling
I can fill a room, but I take up no space. What am I?
light
Question 9 a, c, d
a) large and small are mislabelled
c) 1000
d) 25%
Which word becomes shorter when you add 2 letters to it?
Short
A distribution can be __________ to the left or the right.
Skewed
What type of sampling method is this an example of:
A city would like to find out how many citizens have Internet access. The administration plans to survey 1000 residences in the city chosen through a lottery.
Simple random sampling
What can you put between 7 and 8, to make the result greater than 7, but less than 8?
a decimal point
Question 10
closest match to the answer sheet
What 3 numbers give the same result when multiplied and added together?
1, 2, and 3 (1 + 2 + 3 = 6 and 1 x 2 x 3 = 6)