I need help please on unit nine statistics lesson seven displaying data graphically five practice questions please help

Answer 1

1. The following bar graph shows the number of students in each grade level at a school. What is the total number of students in grades 6-8 combined?

Grade 6: 120 students
Grade 7: 140 students
Grade 8: 160 students

2. The pie chart below displays the distribution of sales for a store. If the total sales for the store were $500,000, how much of the sales came from the Electronics category?

Electronics: 25%
Clothing: 35%
Home Goods: 40%

3. The line graph below shows the monthly temperatures in a city over the course of a year. In which month was the temperature the highest?

January: 32°F
February: 35°F
March: 38°F
April: 42°F
May: 50°F
June: 55°F
July: 60°F
August: 58°F
September: 53°F
October: 45°F
November: 40°F
December: 34°F

4. The scatter plot below displays the number of hours spent studying vs. the grade received on a test for a group of students. Based on the scatter plot, is there a correlation between the number of hours studying and the grade received on the test? If so, is it a positive or negative correlation?

5. The histogram below shows the distribution of scores on a math test for a class of students. What percentage of students scored higher than an 80 on the test?

Score Range:
60-70: 5 students
70-80: 10 students
80-90: 15 students
90-100: 5 students