Math

Question 1

Correlation coefficient

Answer 1

Measure of strength of a linear correlation 

Question 2

Bias

Answer 2

Bias occurs when a survey contains flawed questions, or if a chosen sample does not represent the population 

Question 3

Correlation

Answer 3

Relationship between two variables

Question 4

When given a scatterplot, you can have a

Answer 4

Correlation: positive, negative or no correlation
Strength: strong or weak
Direction: increasing or decreasing

Question 5

Statistical investigation, process steps

Answer 5

1. Identify the problem-clarify the problem in formulate questions that can be answered with data
2. Collect data-design and implement a plan to collect or obtain appropriate data.
3. Analyze data-select and apply appropriate techniques to analyze the data.
4. Interpret and communicate the results-interpret the results of analysis in a way that relates to the original question

Question 6

Census

Answer 6

A type of survey that involves collecting data from the entire population of interest

Question 7

Sample

Answer 7

A smaller group of individuals chosen to represent the population

Question 8

Advantages of data

Answer 8

-helps us identify patterns/relationships
-Helps us build knowledge
-Can help someone make better decisions
-helps find cures to diseases

Question 9

Disadvantages of data

Answer 9

-Data breaches
-Security and privacy
-Media exaggerating data
-Misrepresentation of information
-bias when collecting data

Question 10

Some of the ways that can be misrepresented

Answer 10

1. Use of an inappropriate graph.
2. Misuse of scale or intervals.
3. Misuse of diagram dimensions
4. Leaving out information, or placement of information.
5. Using an improper sample
   (small or non-representative)