Probability 11/18

According to the graph below, which is a valid conclusion?

• More than 50% of the students scored below 61.
• More students had scores of 40 or below.
• More than 50% of the students scored above 80.
• More students scored 61 - 80 than 81 - 100.

What is the description of this histogram? 

• Uniform 
• Skewed Left 
• Symmetric
• Skewed Right 

The histogram shows the number of students and their age groups in a school. Which interval has the lowest frequency?

• 7 to 9
• 13 to 15
• 4 to 6
• 10 to 12

The histogram shows the study hours and the number of students. Find number of students who study for more than 5 hours.

• 4
• 5
• 3
• None of the above 

Victor has recorded the number of trucks that crossed a bridge every 2 minutes. Find the total number of trucks that crossed the bridge in first 4 min.

• 9
• 8
• 12
• 18

What is shape of this histogram?

• Uniform 
• Symmetric
• Skewed Right 
• Circular 

The histogram shows the growth of the plant in successive weeks. If the growth pattern continues constantly after 5^th week, how tall will be the plant during the 10^th week?

• 20 inches 
• 22 inches
• 26 inches 
• None of the above 

What is the description of the this histogram?

• Uniform 
• Symmetric
• Slightly Uniform and symmetric
• Skewed Left 

The graph shows the average weights of Salmons caught on a particular day. Find the number of Salmons caught that weighed between 6 to 8 lbs.

• 20
• 25
• 50
• 30

The graph shows the profits earned by several companies in a state. How many companies earned a profit of about $15,000 to $20,000?

• 20
• 25
• 15
• 10