EOT grade 6 Unit

The frequency diagram shows the masses of the items posted by an internet company in one week.

a. Why are there no gaps between the bars of this frequency diagram?

b. How many items weighed 600–800 g?

c. How many more items were posted that weighed 0–200 g than 200–400 g?

e. How many items were posted altogether?

The frequency table shows the number of MP3 players Gio sold each day in his shop during one month.

a. Draw a frequency diagram to show the data.

b. Can you tell which month your frequency diagram represents? Explain your answer.

c. On what percentage of days in the month were between 20 and 29 MP3 players sold?

The students in class 8T took a test. These are the results, marked out of 50.

a. Draw an ordered stem-and-leaf diagram showing their scores out of 50.

b. What percentage of the students had a score greater than 35?

c. What fraction of the students had a score less than 25?

d. Any student scoring less than 40% must re-sit the test. How many students do not have to re-sit the test?

The stem-and-leaf diagram shows the playing times, to the nearest minute, of some films.

a. How many films were timed?

b. How long was the shortest film in minutes?

c. How many of the films lasted less than 2 and a half hours?

d. How many of the films lasted more than 2 and a half hours?

e. Work out the mode

f. Work out the median.

A restaurant recorded the number of pizzas sold each month for one year. The data are shown in the graph below. During which month did the restaurant sell 40 pizzas?

CLICK ON THE QUESTION TO SEE THE GRAPH AND CLICK AGAIN TO RESTORE IT!

The scatterplot shows the relationship between the number of hours a person exercises and the time it takes to drive to work. Which conclusion does the data most strongly support?

• The time it takes to drive to work decreases as the number of hours exercising increases.  
• The time it takes to drive to work increases as the number of hours exercising increases.  
• The time it takes to drive to work stays the same as the number of hours exercising increases.  
• The time it takes to drive to work is not related to the number of hours exercising.  

Katie carried out a survey to find some students' favorite type of holiday. He recorded the results in a pie chart, like this. 20 students preferred a cruise.

a. What fraction of the students preferred activity holidays?

b. How many students preferred beach holidays?

c. How many students took part in the survey?

The scatterplot shows the number of people in each of 8 different households and the average amount of money each household spent on groceries.

Based on the scatterplot, what is the best prediction of the average amount of money spent on groceries for a household that has 7 people?

Write true (T) or false (F) for each statement.

a. data on length of plats in your yard is discrete data.

b. Your favorite color is non-numerical data.

c. The amount of pairs of shoes you own is continuous data.

d. The total kg of 5 blue is continuous.