Planning and collecting data
How would I measure distance covered by a person cycling in one hour?
Kilometers
Meters
Seconds
Hours
-
Mr John gave his class a mental math test. Here is the data. How many students are there in Miss Chandni's Class?12 14 10 9 7 15 9 11 14 9 11 5 11 11 14 9 12 15 10 8 8 7 15 11 13 14 11 10 15 9 12 11 13 10 14 15 8 10 7 6 15 12 5 7 9 11 14 8 13 9
50
45
40
35
Would you collect primary data or secondary data to answer this question. Which countries in the world have active volcanoes?
Primary Data
Secondary data
Secondary data is . . .
Data that you collect yourself
Data that has a lot of secondary things
Data that you find in secondary schools
Data that someone else has already collected
Population of a village is 986, if we have to find how many people visit the temple how many people should be in sample?
250
Half of population
Just 10%
All
Today Mr John is doing a survey of the length of time a person sleeps. Which unit would she use to measure?
Days
Meters
Hours
Seconds
One way of collecting data is to carry out a survey and ask people questions using a …
Interview
Questionnaire
Announcement
Poster
Where would Mr John get data if he wants to know which country has the highest mountain in the world?
Searching on Google
Local bread store
Ask mom
Travelling nearest country
An information that you collect yourself is called ?
Secondary data
Primary data
Survey
Question
The teacher wants to know in a class of 948 if students would prefer to have lunch break at 12.30 pm or 1.00 pm. She decides to do a sampling of the class. How many students should be in her sample.
495
489
98.4
10% of them
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