Problem-solving / Reasoning At the end of a secretarial course, students were tested on . their typing speeds for
• number of words per minute typing their own text
• number of words per minute when typing words from an audio file.
This back to back stem and leaf diagram shows their results.
Audio Own text
QIf hint The
9 6 5 2 1 3 4 5 7
circled value is 52.
9 7 6 3 3 0 2 2 3 3 4 4 5 7 8 8 9
8 8 7 7 7 6 5 5 430 4 167
425
Key: 512 means 25 words per minute for audio
1211 means 21 words per minute for own text
a The course leader says, "Most of the audio scores are between 40 and 49.'
Write a sentence like this for the own text scores.
b Work out the median and range for:
i audio
li own text.