Data With and Without Variability

T.i.P.S.

For this standard, students will need to practice with a large range of situations in order to generalize which ones yield variability and which situations do not. Once students begin to see that the more specific the question, the less variability, they can begin to predict when a situation will vary and when it will not.

Example

Which of the following situations would yield the most variability in the data collected? Justify your thinking.

a) The daily temperatures of a city for the last 2 weeks
b) The number of goals scored in a recent soccer tournament
c) The number of students who attended the theatre performance last Friday
d) The amount of calories eaten in a day

Hint
Possible Solution

TEKS

Supporting Standard 6.13 Measurement and data. The student applies mathematical process standards to use numerical or graphical representations to solve problems. The student is expected to:

(B) distinguish between situations that yield data with and without variability

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