To find the mean time each group spent shopping, you need to add up all the times and then divide by the number of data points in each group.
For Group A:
Mean = (18 + 20 + 46 + 34 + 58 + 31 + 41) / 7
Mean = 248 / 7
Mean = 35.4 minutes
For Group B:
Mean = (15 + 21 + 32 + 42 + 29 + 57 + 39) / 7
Mean = 235 / 7
Mean = 33.6 minutes
The mean time Group A spent shopping is 35.4 minutes.
The mean time Group B spent shopping is 33.6 minutes.
To find the difference in mean times:
35.4 minutes - 33.6 minutes = 1.8 minutes
Therefore, the mean times Group A and Group B spent shopping differ by 1.8 minutes.
Statistics Unit Test
6 of 15 6 of 15 Items
A bar graph shows pet ownership. The x-axis shows type of pet and represents dog, cat, golfish, and hamster. The y-axis represents number of students and ranges from 0 to 11 in increments of 1. The data shows 10 dogs; 8 cats; 2 goldfish; and 3 hamsters.
A pie chart divided into 6 inequal sections is titled Activity Hours per Week. The sections are labeled school, 40, 24 percent; eat, 21, 13 percent; sports or play, 15, 9 percent; social media or TV, 24, 14 percent; sleep, 56; and other 12, 7 percent.
Question
Use the table to answer the question.
Group A 18 20 46 34 58 31 41
Group B 15 21 32 42 29 57 39
The table shows the times, in minutes, spent shopping by two different groups. First find the mean times each group spent shopping. Then determine the difference in the mean times. Round your answers to one decimal place.(2 points)
The mean time Group A spent shopping is
minutes.
The mean time Group B spent shopping is
minutes.
The mean times Group A and Group B spent shopping differ by
minutes
1 answer