Interpreting Qualitative Graphs

Reading Graphs

Recap

Open Ended

What type of graph is this?

Multiple Select

What type of data is this?

(select all that apply)

• Primary

• Secondary

• Qualitative

• Quantitative (Continuous)

• Quantitative (Discrete)

Multiple Choice

How many students take the bus to school?

• 35

• 20

• 10

• 15

Multiple Choice

Another tree in the orchard is measured. Which height is the tree most likely to be?

• 12 feet

• 21 feet

• 3 feet

• 19 feet

Open Ended

What type of graph is this?

Multiple Select

What type of data is this?

(select all that apply)

• Primary

• Secondary

• Qualitative

• Quantitative (Continuous)

• Quantitative (Discrete)

Multiple Choice

How many runners ran 38 miles?

• 1

• 2

• 3

• 4

• 5

Multiple Choice

In which year did exactly 60 students have scholarships?

• 2010
• 2011
• 2012
• 2013

Open Ended

What type of graph is this?

Multiple Select

What type of data is this?

(select all that apply)

• Primary

• Secondary

• Qualitative

• Quantitative (Continuous)

• Quantitative (Discrete)

Multiple Choice

What percentage people choose zucchini?

• 15%

• 25%

• 30%

• 10%

Multiple Choice

Which Continent is home to 36% of the wild cats?

• Asia
• Africa
• North America
• South America

Multiple Choice

Which type of pet is the most common?

• Bird

• Cat

• Dog

• Elephant

• Rabbit

Open Ended

What type of graph is this?

Open Ended

What is the red line called?

Line of best fit

• A line of best fit it a type of trend line; it shows the 'trend' of the data.

• We can use trend lines to estimate values at points where we have no data.

• A line of best fit is always a straight line, so must be drawn with a ruler.

• There should be as many point above the line as below the line.

• The line should be the minimum total distance away from all the points.

Open Ended

Estimate the height for a data point at age 60 months.

Open Ended

Estimate the height for a data point at age 10 months.

Positive Correlation

• If the line of best fit starts near the origin and goes diagonally upward, we say that the two measurements of data have a positive correlation.

• A positive correlation means that if one measurement increases, the other measurement will increase too.

• The closer the data ponits are to the line, the stronger the correlation.

Negative Correlation

• If the line of best fit starts near the tip of one axis then goes diagonally downwards to the tip of the other axis, we say that the two measurements of data have a negative correlation

• A negative correlation means that if one measurement increases, the other measurement will decrease.

• The closer the data ponits are to the line, the stronger the correlation.

Multiple Select

Which of the following graphs show a positive correlation?

Multiple Select

Which of the following graphs show a negative correlation?