Chapter 4 - Data Flashcards
1
Q
Primary data
A
- Collected by the person doing the investigation
-first hand
2
Q
Secondary data
A
- Using data that someone else has collected & stored
- second hand
3
Q
Qualitative / categorical data
A
Non - numerical data
- e.g colours, names, places-yes, no
4
Q
Quantitative / numerical data & it’s two divisions
A
- Numerical
- discrete- certain value, counting
-continuous- between 2 given values, measuring
5
Q
How do you find an angle to make a pie chart
A
- Find total
-write a fraction with the data of angle as the numerator & total as denominator - multiply that fraction by 360
6
Q
What is unsorted data called
A
Raw data
7
Q
How do you get data from a pie chart (in specifics, e.g number of ppl, number of hours)
A
- Measure the angle
- make it a fraction with 360 as denominator
- simplify the fraction
- multiply that fraction by the total of the pie chart
8
Q
How do you find percentage from a pie chart
A
- Make a fraction with the total as denominator & the number of which the percentage you want to find
- multiply that fraction by 100
Or
- do angle number over 360 multiplied by 100