weighted mean

John earned $450 a night working nights for 15 days in November, He also earned $300 a day for working days for 10 days in November, What is his daily average amount earned for these 25 days in November?

(a)  

Find the class grade for a student with grades:

Test 89%, Quiz 92%, Homework 86%, and Classwork 95%.

Tests are 60% of the grade, Quiz 15%, Homework is 10% of the grade, and Classwork is 15% of the grade.

(Round to the nearest hundredth - two decimal places)

• 89.25

• 91.55

• 90.05

• cannot be determined

Terrance's homework grade was a 72, his project grade was an 80 and his exam grade was an 82.

Homework is worth 10% of the final grade, the project was worth 50%, and the exam was worth 40%.

What is Terrance's final grade?

• 80

• 78

• 82

• 76

Find the weighted mean.

Round to the nearest tenth (one decimal place)

• 6.5

• 7.3

• 8

• 9.1

Which of the following best describes the shape of the distribution?

• SKEWED LEFT
• SKEWED RIGHT
• UNIFORM
• SYMMETRICAL

What is the mean score for all ninth graders in the city?

(Round to the nearest hundredth - two decimal places)

• 81.49

• 83.52

• 85.68

• 87.70

What is the formula to find a weighted mean?

In the Miss Westside pageant, the interview score counts 6 times, the talent score counts 5 times and the final question response counts 3 times. If a contestant has an interview score of 90, a talent score of 96, and a question score of 80, what is her weighted mean score?

Round to the nearest tenth (one decimal place)

• 93.3

• 91

• 90

• 88.3

In a university Biology class a student's grade is determined by your class score - 60%, lab score - 25%, and final exam score - 15%. If Gerald has a class score of 78, a lab score of 92 and a final exam score of 74, what is his final grade?

Round to the nearest tenth (one decimal place)

• 79.2

• 80.9

• 81.3

• 82.6

Find the mean for the following frequency distribution:

Round to two decimal places

• 17.84

• 12.47

• 15.16

• 13.29