Data

Curriculum details

Strand

Handling Data (Strand 4)

Sub-strand

Data (4.1)

Content standard

B7.4.1.2 - Determine the measures of central tendency (mean, median, mode) for a given ungrouped data and use it to solve problems

Indicator

B7.4.1.2.2 - Calculate the median for a given ungrouped data and use it to solve problems

Suggested placement

Term 3, Week 11 (Week 35 of the year)

Our suggestion, laid out in curriculum order across three terms of twelve weeks. NaCCA does not fix the week, so follow your school's scheme of learning.

Curriculum reference

Mathematics, Common Core Programme (JHS1-JHS3), 2023, p. 84

Transcribed from the official NaCCA publication. Check this page against the source.

Exemplars (from the NaCCA curriculum)

E.g. 1 Find the median for a data set by arranging the items in the set in an array and identifying the middle item.
i. Find the median of 19, 29, 36, 15, and 20. (i.e. the middle item in the array 15, 19, 20, 29, 36 is 20). NB. since there are 5 values (odd number), 20 is the median (middle number)
ii. Find the median for the data set 8, 9, 7, 6, 8, and 10. (i.e. the middle item in the array 6, 7, 8, 8, 9, and 10 is 8). NB. since there are 6 values (even number), we must average those two middle numbers to get the median value
E.g. 2 Find the median for a data set (in a frequency table).
iii. Find the median mark obtained in a mathematics class test presented in the frequency table:

Score 1 2 3 4 5 Frequency 2 6 4 5 3 NB. Since there are 20 values, the 10 th and 11 th scores are the middle numbers and they are both 3, so the median value is 3.
iv. Find the median ages of children at a party presented in the frequency table:

Ages (x): 1 3 5 6 7 8 9 Frequency (f): 2 5 6 10 8 5 3
NB. Since there are 39 values, the 20 th age is 6, so the median value is 6.