Statistics - the basics

Dylan wants to know how the students at his school rate the cafeteria.  He surveyed his school's basketball team to rate the school cafeteria. Is this a biased sample of the school's population?

• Yes, because it is a convenience survey
• No, the basketball team has the smartest students
• Yes, because it's voluntary survey
• No, he should have asked the football team

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

A sample in which members of the population are divided into two or more subsets called strata that share a common characteristic. The participants are then randomly selected from each group.

• Systematic Random Sample
• Stratified Random Sample
• Cluster Sample
• Simple Random Sample

What is the branch of mathematics dealing with the collection, organization, analysis, interpretation and presentation of data?

• Algebra

• Geometry

• Probability

• Statistics

A sample should be

• representative of  only middle school students only
• a very large group
• representative of the population
• representative of people who volunteer

Tags

CCSS.7.SP.A.1

CCSS.7.SP.A.2

Mrs. Trahan samples her class by picking 10 numbers from her hat and each number is assigned to a student. This is ______________ random sampling.

• Systematic
• Simple
• Stratified
• Cluster

Tags

CCSS.HSS.IC.A.1

CCSS.HSS.IC.B.3

What type of Data Display is this?

• Line Plot

• Pie Chart

• Histogram

• Stem & Leaf Plot

What type of Data Display is this?

• Line Graph

• Histogram

• Scatter Plot

• Bar Graph

Stem and leaf plots are a good data display because...

• They break down large numbers into groupings

• They show the correlation of a data set (positive or negative)

(a)   charts are used for categorical/qualitative data.

Explain why this graph may be misleading?

• the x-axis does not have equal intervals
• San Fransisco is not a real city
• you cannot have percents in a line graph
• the y-axis does not have equal intervals

Tags

CCSS.6.SP.B.5

CCSS.6.SP.B.4