# SCATTER DIAGRAMS

The scatter-diagram for the relationship between maths and science test results of class is shown in the diagram below.

What type of correlation, if any, is there between the two variables?
The scatter-diagram for the relationship between maths and science test results of class is shown in the diagram below.

Using the line of best fit, what would a student’s maths mark, if he scored 50 marks in science?
The scatter-diagram for the relationship between maths and science test results of class is shown in the diagram below.

Using the line of best fit, what would a student’s science mark, if he scored 70 marks in maths?
The petrol consumption of cars with similar engine capacity is shown in the figure.

What type of correlation, if any, is there between the two variables?
The petrol consumption of cars with similar engine capacity is shown in the figure.

Estimate the petrol consumption of car travelling at 48 mph.
The petrol consumption of cars with similar engine capacity is shown in the figure.

Estimate the speed of the car whose petrol consumption is 30 mpg.
The maximum speed of dragon boat with respect to the number of paddlers is recorded and plotted in a correlation graph as shown below:

What type of correlation, if any, is there between the two variables?
The maximum speed of dragon boat with respect to the number of paddlers is recorded and plotted in a correlation graph as shown below:

Estimate the number of paddlers required to achieve a maximum speed of 20 km/h.
The maximum speed of dragon boat with respect to the number of paddlers is recorded and plotted in a correlation graph as shown below:

Estimate the maximum speed achieved by 15 paddlers.
Strawberry plants are sprayed with fertiliser-pesticide mix. The yield of strawberries for different spray concentration is shown in the diagram below.

What type of correlation, if any, is there between the two variables?
Strawberry plants are sprayed with fertiliser-pesticide mix. The yield of strawberries for different spray concentration is shown in the diagram below.

Estimate the yield of strawberries per plant for a spray concentration of 7 ml per litre.
Strawberry plants are sprayed with fertiliser-pesticide mix. The yield of strawberries for different spray concentration is shown in the diagram below.

Estimate the spray concentration required to achieve a yield of 15 strawberries per plant.
Following an outbreak of Ebola, the number of cases diagnosed with respect to the days after outbreak is shown in the diagram below:

What type of correlation, if any, is there between the two variables?
Following an outbreak of Ebola, the number of cases diagnosed with respect to the days after outbreak is shown in the diagram below:

Estimate the number of cases diagnosed after 4 days of outbreak?
Following an outbreak of Ebola, the number of cases diagnosed with respect to the days after outbreak is shown in the diagram below:

After how many days of outbreak, were 105 cases diagnosed?