Deshaun's test score average decreased by 10 points this semester.Write a signed number to represent this change in average.

Fill in the blanks below.(a) The population of a certain city increased by 44,000 people.Write a signed number to represent this population change.(b) Amy's test score average decreased by 9 points this semester.Write a signed number to represent this change in average.

Michael took 12 tests in his math class. His lowest test score was 78. His highest test score was 98. On the 13th test, he earned a 64. Select whether the value of each statistic for his test scores increased, decreased, or could not be determined when the last test score was added.

Marks scored by 104 students of a college in the mid-term exam given below. Draw histogram. Marks No. of students 0-24 12 24-40 16 40-48 24 48-68 40 68-80 12

The points scored on a test for a sample of 36 students are summarized in the following table.Number of students Score for each student7 9015 8014 70Find the mean points scored. Round your answer to the nearest tenth.points

Consider the following data:               12 students get less than 10 marks   18 students get less than 20 marks  30 students get less than 30 marks  40 students get less than 40 marks  56 students get less than 50 marksHow many students get marks between 30-40 marksSelect one:a.70b.30c.40d.10