Data Analysis, Statistics & Probability — Quiz 4

Questions in this quiz (10)

1. $$415,\ 620,\ 580,\ 415,\ 750,\ 690,\ 530$$What is the median of the following numbers?

   • $$530$$
   • $$580$$
   • $$620$$
   • $$690$$

2. $$9,\ 14,\ 11,\ 9,\ 7,\ 13,\ 9,\ 12$$What is the mode of the following numbers?

   • $$9$$
   • $$10$$
   • $$11$$
   • $$12$$

3. Students in Ms. Jones's class took a math test. Their grades are displayed on a line plot. Each dot represents one student. The frequencies shown are:Which grade displayed the highest frequency?

   • $$F$$
   • $$D$$
   • $$C$$
   • $$B$$

4. A graph shows the percent of total flu cases reported to the CDC each week during the 2012–2013 flu season. The approximate percentages for the weeks beginning December 9 through January 5 are:Approximately what percentage of flu cases was reported during this time period?

   • $$7\%$$
   • $$15\%$$
   • $$36\%$$
   • $$50\%$$

5. A school surveyed students about how many hours they studied each week.How many students were surveyed?

   • $$18$$
   • $$20$$
   • $$22$$
   • $$24$$

6. A spinner is divided into 10 equal sections numbered 1 through 10. What is the probability of spinning a 7?

   • $$\frac{1}{5}$$
   • $$\frac{1}{10}$$
   • $$\frac{3}{10}$$
   • $$\frac{1}{2}$$

7. Maria spun a spinner 24 times. The results were:$$3,\ 5,\ 1,\ 3,\ 6,\ 3,\ 4,\ 2,\ 3,\ 5,\ 1,\ 3,\ 2,\ 6,\ 4,\ 3,\ 5,\ 2,\ 3,\ 1,\ 6,\ 4,\ 3,\ 2$$Based on the results, what is the experimental probability of spinning a 3?

   • $$\frac{1}{4}$$
   • $$\frac{1}{3}$$
   • $$\frac{3}{8}$$
   • $$\frac{1}{2}$$

8. A bag contains 15 chips: 7 red chips, 5 blue chips, and 3 green chips. If one chip is selected at random, what is the probability that it is blue?

   • $$\frac{1}{5}$$
   • $$\frac{1}{3}$$
   • $$\frac{5}{15}$$
   • $$\frac{7}{15}$$

9. A jar contains 5 yellow marbles, 4 green marbles, and 3 purple marbles. If one marble is selected at random, what is the probability that it is not green?

   • $$\frac{1}{3}$$
   • $$\frac{2}{3}$$
   • $$\frac{8}{12}$$
   • $$\frac{4}{12}$$

10. Jordan flipped a coin 50 times. He got 28 heads and 22 tails. Based on Jordan's results, what is the experimental probability of getting heads?

    • $$\frac{11}{25}$$
    • $$\frac{14}{25}$$
    • $$\frac{3}{5}$$
    • $$\frac{4}{5}$$