Online worksheet ยท 4 of 4
Grouping can lose exact detail - Online practice 4
Read the information, then answer the questions. An adult may read the instructions aloud. Show your working where asked.
Read before answering
Grouped times in minutes: 0 <= t < 10 has frequency 1; 10 <= t < 20 has frequency 4. Exact individual times are not supplied. Use interval midpoints 5 and 15 to estimate the mean. Frequency is a count, not a time measurement.
Worksheet preview
This exercise is included in the paid course. Full-course fee: GBP 200.00 once. Register and enrol to complete all course exercises and download the course PDFs. Access begins after payment is confirmed.
Already registered? Sign in