Question

if i ask a question about a students age, i should do which of the following to get cleaner data?

○ give them clear instructions at the top of the page

○ give them limited options of numeric answers

○ ask them to enter their answer twice and ensure both entries match

○ offer a short text response field so they can answer completely

question 8
1 pts

we should include a __________ sample of students if we want unbiased results for that population.

○ representative

○ small

○ heuristic

○ large

Explanation:

• For the first question:
• Clear instructions at the top of the page may not directly ensure cleaner data for age - related responses.
• Limited options of numeric answers might restrict the range but not necessarily ensure data cleanliness.
• Asking to enter the answer twice and ensuring both entries match can help detect and correct input errors, leading to cleaner data.
• A short text response field may lead to inconsistent or incorrect formatting.
• For the second question:
• A representative sample is one that accurately reflects the characteristics of the population, which is necessary for unbiased results.
• A small sample may not be sufficient to represent the population.
• A heuristic sample is based on rules - of - thumb and may not be unbiased.
• A large sample alone does not guarantee representativeness.

Answer:

• First question: Ask them to enter their answer twice and ensure both entries match.
• Second question: Representative.