Åk 6–9

4.9 Excercises - Diagram
1. The right type of diagram
 Which type of diagram is shown in the picture? a) b) c) d)   2. Age distribution in a family The diagram shows the age distribution in a family.  Calculate: a) Mean age b) Median 3. Box Plot
 A group of students received the following results on a math test: 42, 47, 15, 60, 20, 30, 45, 58, 48,17, 29, 20, 54 i 28 points. Calculate: a) mean b) Lower quartile c) Upper quartile d) Least points e) Greatest Points f) How many students got between 10 and 40 points? g) Which of the box plots describes the test results correctly?   4. Frequency Diagrams The table shows how many hours per week a group of students studies math. a) How many students study less than three hours per week? b) How many students study more than three hours per week? c) How many students were in the group? 5. Unemployment The diagram shows how large a percent of the work force was unemployed from 1999-2005. a) During which year(s) was unemployment the lowest? b) During which year(s) was unemployment the highest?