1) Which of the following correctly represents the formula for calculating the relative frequency of a category in a data set? a) category ÷ total frequency b) total Frequency ÷ frequency c) total frequency ÷ total frequency d) frequency of each category ÷ total frequency 2) Using the frequency distribution table below, what is the relative frequency of grapes? a) 0.15 b) 0.20 c) 0.25 d) 0.30 3) A bag contains 5 red marbles, 3 blue marbles, and 2 green marbles. Without looking, you randomly pick one marble from the bag. What is the probability that the marble is red? a) 3/10 b) 1/2 c) 1/5 d) 10/10 4) The graph below shows the number of days each kind of weather occurred during the month of December. Which of the following interpretations is correct? a) There were fewer number of cloudy days than windy days.  b) There was least occurrence of rainy days.  c) There were 4 cloudy days which has the shortest number of days. d) There were 8 sunny days, 5 cloudy days, and 6 windy days which were fewer than rainy days. 5) Which type of graph is best for showing the percentage of students who prefer different types of sports? a) Pie graph b) Bar graph c) Line graph d) Stem-and-leaf plot 6) A line graph below shows a steady increase in sales over 12 months. What can you conclude about the company’s sales trend? a) Sales are decreasing b) Sales are increasing c) Sales are fluctuating d) Sales are constant 7) Which of the following is the correct method to calculate probability in a simple event? a) Number of total outcomes ÷ number of favorable outcomes b) Number of favorable outcomes ÷ total number of outcomes  c) Number of favorable outcomes × total outcomes d) Total outcomes – favorable outcomes 8) Using the frequency table below, what is the relative frequency of bananas? a) 0.15 b) 0.25 c) 0.30 d) 0.375 9) A die is rolled once. What is the probability of rolling a number less than 4? a) 1/6 b) 1/3 c) 1/2 d) 3/6 10) The bar graph shows the number of books read by students in each grade: What conclusion can you make? a) Students in Grade 6 read fewer books than students in Grade 5. b) Grade 7 students read the least number of books. c) The number of books read by Grade 4 and Grade 5 are equal. d) Students in Grade 6 read the most books. 11) Which type of graph is most suitable for showing a change in temperature over a week? a) Pie chart b) Line graph c) Bar graph d) Histogram 12) A line graph shows the number of customers visiting a store each week for 6 weeks. The line rises steadily. What does this indicate? a) The number of customers is decreasing b) The number of customers is stable c) The number of customers is increasing d) There are no customers 13) What kind of graph was used to illustrate the relationship between study time and overall performance of Grade 7 students? a) Bar graph b) Line graph c) Pictograph d) Pie graph 14) How many students had an academic performance above 80? a) 4 b) 5 c) 6 d) 7 15) How many students had an academic performance below 80? a) 4 b) 5 c) 6 d) 7

CARE+1 W4 Using Statistics and Probability

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