Math Statistics

What is the upper quartile(Q3) for both 1st Period and 2nd Period?

• 80, 85

• 90, 85

• 100, 95

• 90, 92

What is the range of the follow set of data:

• 67

• 43

• 68

• 56

How do you find the range of a set of data?

• Find the middle number

• The number that appears the most

• Add all the numbers up and divide them by the total amount of numbers

• The highest value minus the lowest value

What is the interquartile range of test scores for 1st Period?

• 70-95

• 75-90

• 15

• 10

Gio surveys 40 Quick Trip employees. He reports that 5 out of 15 fast-food employees are satisfied with their hourly pay rate. What percentage of employees are happy with their pay rate?

• 40%

• 33%

• 12.5%

• 38%

A recent survey of 800 seventh graders from across the state shows 4 out of 10 like to play paper football. How many students said they like to play paper football?

• 40 students

• 200 students 

• 320 students

• 8,000 students

In a game, the probability of winning is 1 out of 5. How many times could Lisa expect to win if she plays the game 85 times?

• 17

• 34

• 68

• 80

A coin was tossed 80 times, out of which it landed on heads 60 times. What is the relative frequency of the coin toss resulting in tails?

• 20%

• 25%

• 50%

• 75%

Kris has a bag that contains only red marbles, green marbles, and purple marbles. Kris pulls a marble from the bag, records the color of the marble and puts it back in the bag. She performs 25 pulls and draws 8 red marbles, 12 green marbles, and 5 purple marbles. Based on the data, about how many times would Kris pull a red marble if she performed 1,000 pulls?

• 200

• 320

• 330

• 470

What is the difference in the IQRs?

• 1

• 2

• 3

• 4