الانتقال إلى المحتوى
The Lumenary
الروضة–الصف الثانيProbability & Statisticsمُخطَّط له

Data, tallies and picture graphs

Asking questions, collecting data by counting, sorting answers into categories, recording with tally marks, and showing results in picture graphs.

math.prob.data-and-tallies

أظهِر كل ما يلزم للوصول إلى هذا الموضوع

لم يُكتب درس هذا الموضوع بعد. المخطط أدناه جزء من خريطة المنهج ولم تجرِ مراجعته.

يعتمد على

Counting

عدد المتطلبات السابقة الإلزامية (حتى الأساس): 2

ستتعلّم

  • Collect answers to a simple question and sort them into categories.
  • Record counts with tally marks and show them in a picture graph or block graph.
  • Answer 'how many more' and 'which is most' questions from a graph.

تعريف

  • Data are pieces of information collected to answer a question.
  • A tally mark records one item; tallies are grouped in fives to make counting easier.
  • A picture graph uses one picture for each item, or for a fixed number of items.

مبرهنة

  • If every answer goes into exactly one category, the category totals add up to the number of answers collected.
  • Comparing categories by the length of a row of pictures is reliable only when the pictures are the same size and evenly spaced.

مفاهيم خاطئة شائعة

  • Comparing rows of pictures of different sizes by their length.
  • Counting one answer in two categories.

يقود إلى

Data displays and the mean as a fair share

اكتشافات اختيارية