Browse Averages & range

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Mean, median, mode & range

15 questions

LessonNot started
Here are five numbers: 3,  7,  4,  7,  9\quad 3, \; 7, \; 4, \; 7, \; 9. Write down the mode.
●●●●●Level 11 markStart
Here are five numbers: 3,  7,  4,  7,  9\quad 3, \; 7, \; 4, \; 7, \; 9. Work out the median.
●●●●●Level 12 marksStart
Here are five numbers: 3,  7,  4,  7,  9\quad 3, \; 7, \; 4, \; 7, \; 9. Work out the mean and the range.
●●●●●Level 13 marksStart

Averages from a frequency table

12 questions

LessonNot started
The table shows the number of pets owned by 2020 students.
Pets00112233
Frequency66994411
Write down the modal number of pets.
●●●●●Level 11 markStart

Estimating averages from grouped data

15 questions

LessonNot started
The table shows the times, tt minutes, that 3030 students took to finish a puzzle.
Time (tt minutes)Frequency
0<t≤100 < t \le 1055
10<t≤2010 < t \le 201818
20<t≤3020 < t \le 3077
Write down the modal class.
●●●●●Level 11 markStart
The table shows the times, tt minutes, that 3030 students took to finish a puzzle.
Time (tt minutes)Frequency
0<t≤100 < t \le 1055
10<t≤2010 < t \le 201818
20<t≤3020 < t \le 3077
Write down the midpoint of the class 10<t≤2010 < t \le 20, and explain why an estimate of the mean uses midpoints.
●●●●●Level 12 marksStart