Math F1 Ch.12 quiz

Determine whether the amounts of energy of different packs of chips are numerical data or non-numerical data. In the case of numerical data, further determine whether the data are discrete data or continuous data.

• Non-numerical data

• Numerical data, discrete data

• Numerical data, continuous data

• None of the above

Determine whether the costs of different brands of phones are numerical data or non-numerical data. In the case of numerical data, further determine whether the data are discrete data or continuous data.

• Non-numerical data

• Numerical data, discrete data

• Numerical data, continuous data

• None of the above

If Mr Choi wants to present the frequency distribution of heights of all students in class 1D, which statistical chart should he use?

• Broken line graph

• Bar chart

• Histogram

• Combination chart

The pie chart shows the residential districts of x employees in a company. If the number of employees living in Kowloon is 150, find x.

• 300

• 250

• 375

• 500

The stem-and-leaf diagram shows the distribution of the numbers of T-shirts in all branches of a boutique. If 4 branches have less than 14 T-shirts, which of the following can be a possible value of x?

• 1

• 2

• 3

• 4

The back-to-back stem-and-leaf diagram shows the distribution of the hourly wages (in dollars) of the workers in two factories. If a new law that regulates the minimum wage is $52 per hour passes, how many workers in both factories will be underpaid?

• 18

• 19

• 20

• 21

The histogram shows the daily time spent (in min) by some clerks on checking e-mail in a company. Find the class width and class mark.

• The class width = 10 min

  The class mark = 9.5 min

• The class width = 9.5 min

  The class mark = 10 min

• The class width = 9.5 min

  The class mark = 9.5 min

• The class width = 10 min

  The class mark = 10 min

Find the lower class boundary of the 2nd class interval.

• 4.45 kg

• 4.5 kg

• 5.5 kg

• 5.45 kg

Find the number of dogs which are between 4.45 kg - 4.95 kg.

• 8

• 9

• 18

• Cannot be determined

Find the percentage of books with printing costs less than $50.5 but not less than $30.5. (corr. to 3 sig. fig.)

• 75.4%

• 60.0%

• 44.6%

• 21.5%