From the graph, as the demand of an item rises, there is a rise in the price of the item and as the demand reduces there is a decrease in the price of an item.

If one set of data tends to increase with an increase in the other set, the plot is said to have a positive trend.

So, the scatter plot shows a positive trend.

The vertical coordinate of each point in the scatterplot represents Andrew's height and the horizontal coordinate represents his age.

From the graph, the vertical coordinate of the point corresponding to 15 years is 5 ft.

So, Andrew was 5 ft tall when he was 15 years old.

The vertical coordinate of each point on the scatter plot indicates the distance traveled by Diane during each hour.

The distance traveled in the first hour of the journey is 50 km.

The distance traveled in the second hour is 55 km.

The distance covered in third hour is 52.5 km. as it is in between 50 and 55.

The total distance covered in the first three hours of the journey = 50 + 55 + 52.5 = 157.5 km.

The distance traveled by Diane in 3 hours is 157.5 km.

The height of each point on the scatter plot indicates the number of items of a particular cost bought by Lindsay.

From the graph, the number of items of costs $2, $4, $6, $8 and $10 are 3, 5, 3, 2 and 3 respectively.

The total amount spent by her is the sum of the products of the number of items and the cost of each item.

So, the total amount = $2 x 3 + $4 x 5 + $6 x 3 + $8 x 2 + $10 x 3

So, Lindsay spent $90 in the supermarket.

The height of each point in the plot represents the contribution made in that particular year.

The height of the point corresponding to the 1^st year represents the value $1000, which is the least.

So, the minimum contribution made to the orphanage was $1,000.

The height of each point in the scatter plot gives the distance traveled by Victor at the particular speed in the time.

From the graph, Victor can travel 150 miles in the time if he travels at 70 mph.

Victor can travel 190 miles in the time if he travels at 80 mph.

Difference between the distances = 190 - 150 = 40

So, Victor can travel 40 more miles in the time if he travels at 80 mph than that when he travels at 70 mph.

The height of each point in the plot represents the population of a particular state in a particular year.

From the plot, the population of Alabama in the year 1999 is 4 million.

The population of Alabama in the year 2002 is 8 million.

Increase in the population = 8 - 4 = 4 million

So, the percentage increase in the population = IncreaseOriginal x 100

In the scatter plot, the horizontal axis represents Charles's age and the vertical axis represents his weight in lb.

The vertical distance of each point in the scatter plot indicates the weight of Charles when he was a particular age.

From the graph, the vertical distance of the point corresponding to 30 is 125.

So, the weight of Charles was 125 lb when he was 30 years old.

In the scatter plot, the horizontal axis represents Jeff's age and the vertical axis represents his weight in lb.

The vertical distance of each point in the scatter plot indicates the weight of Jeff when he was a particular age.

From the graph, the vertical distance of the point corresponding to 20 is 100.

So, Jeff's weight was 100 lb. when he was 20 years old.

The height of each point in the graph indicates the income (in $1000) of the dealer in the corresponding year.

From the graph, the incomes of the dealer in 1985, 1990, 1995 and 2000 are $40000, $45000, $35000 and $50000, respectively.

The income of the dealer was the highest in 2000.

In the scatter plot, the horizontal axis indicates the year and the vertical axis indicates the income (in $1000) earned by the wholesale dealer.

The height of each point in the graph indicates the income (in $1000) of the dealer in the particular year.

From the graph, the vertical coordinate of the point corresponding to the year 2000 is 50.

So, the income of the wholesale dealer in 2000 was $50,000.

The height of each point in the scatter plot indicates the yield of the apple orchard in the corresponding year.

From the scatter plot, the number of apples in the year 1985 = 700

Number of apples in the year 1990 = 800

Increase in the number of apples

The vertical coordinate of each point on the scatter plot indicates the consumption of goods (in million tons) in the corresponding year.

From the plot, the consumption of the goods in 1999 was 35 million tons.

The consumption of the goods in the year 2000 is 25 million tons.

So, the ratio of the consumption of goods in 1999 to that in 2000 = 35 : 25 = 7 : 5

Number of matches won in 1988 = 70

Number of matches won in 1989 = 45

Number of matches won in 1990 = 65

Total number of matches won by USA from 1988 to 1990 = 70 + 45 + 65 = 180

So, the total number of matches won by USA from 1988 to 1990 is 180.

Each point in the scatter plot shows the test score of a student who studied for the respective number of hours.

Draw a vertical line starting from 10 hours in the scatter plot. This line intersects the trend line at a point.

From the intersection, draw a horizontal line that intersects the y-axis. This intersection point on the y-axis gives the required test score as the y-axis represents the test scores.

So, a student who studied for 10 hours would have scored about 68 points