A frequency diagram shows the telephone lines in a number of call centers. ☎ represents a fixed number of lines. This sort of diagram is called a .......

One ☎ represents 20 'phone lines. The pictogram shows 4 symbols for the Ayford call center. How many lines are there at Ayford?

The Beeston center has 70 'phone lines. How many symbols are needed to represent Beeston?

The midnight temperatures, in °C, are recorded daily for a week. Which diagram is best for displaying this data?

Temperature is measured on the vertical axis. What goes on the horizontal axis?

The recorded temperatures were: Mon 3°, Tue 2°, Wed 0°, Thu 1°, Fri 1°, Sat -1°, Sun -2°. What was the range of temperatures for the week?

A bar chart records the frequency and length of Tina's text messages (max length = 160 characters). The width of each bar, in characters, should be .......

Tina sends T texts. Which of these describes the category 'more than 20 but no more than 40 characters'?

On the vertical axis of the bar chart, 1 cm represents 5 texts. Tina sent 25 texts of 20 < T ≤How high is the bar for this category?

Joining up the mid points of all the bars forms a frequency .......