From a list of 40 single-digit numbers (1 to 9) collected in a survey, the frequencies of 1 through 8 add up to 33. Each of the remaining values is the digit 9. How many times does 9 appear, and is that more or fewer than the average frequency if all 9 digits had appeared equally?

Question

Accepted Answer

9 appears 7 times, which is more than the average of about 4. 9s = 40 - 33 = 7. If 40 values were shared equally among 9 digits, each would average about 40/9 which is roughly 4. Since 7 > 4, the digit 9 appears more often than that average.

From a list of 40 single-digit numbers (1 to 9) collected in a survey, the frequencies of 1 through 8 add up to 33. Each of the remaining values is the digit 9.
How many times does 9 appear, and is that more or fewer than the average frequency if all 9 digits had appeared equally?

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More Class 6 Organising Data practice

From a list of 40 single-digit numbers (1 to 9) collected in a survey, the frequencies of 1 through 8 add up to 33. Each of the remaining values is the digit 9.How many times does 9 appear, and is that more or fewer than the average frequency if all 9 digits had appeared equally?

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 6 Organising Data practice

From a list of 40 single-digit numbers (1 to 9) collected in a survey, the frequencies of 1 through 8 add up to 33. Each of the remaining values is the digit 9.
How many times does 9 appear, and is that more or fewer than the average frequency if all 9 digits had appeared equally?