Mean and Average Quiz

What is the mean number of miles run by each cross-country member if the miles run were 35, 35, 35, 36, and 39?

• 35

• 36

• 37

• 38

Answer explanation

The mean number of miles run is calculated by adding all the miles and dividing by the number of members. (35+35+35+36+39)/5 = 36.

How many fish would you expect to find in the next tank if the mean number of fish in each tank at the pet store is calculated from tanks containing 12, 17, 11, 14, and 14 fish?

• 14

• 15

• 16

• 17

Answer explanation

To find the mean, add all the numbers and divide by the total count. (12+17+11+14+14)/5 = 68/5 = 13.6. Rounding up gives 14, so the expected number of fish in the next tank is 16.

What was the mean temperature last week if the recorded temperatures were 71, 75, 77, 76, 77, and 74 degrees Fahrenheit?

• 75 degrees

• 76 degrees

• 77 degrees

• 78 degrees

Answer explanation

To find the mean temperature, add all temperatures together and divide by the number of temperatures. (71+75+77+76+77+74)/6 = 450/6 = 75 degrees.

If Lucia sold her crafts for $7, $4, $3, $6, $1, and $3, what was the mean selling price of her crafts?

• $3

• $4

• $5

• $6

If the mean number of snacks in 6 packages is 144 and the number of snacks in 5 of the packages are 122, 134, 150, 145, and 133, how many snacks were in the sixth package?

• 166

• 156

• 146

• 136

Given the growth of a plant over 5 weeks as 13, 6, 10, 5, and 11 centimeters, and the mean growth over 6 weeks as 9 centimeters, how many centimeters did the plant grow in the sixth week?

• 10 cm

• 9 cm

• 8 cm

• 7 cm

If a football team scored 35, 49, 39, 44, and 52 points in the first five games and the mean score over six games was 40 points, how many points did the team score in the sixth game?

• 31 points

• 41 points

• 51 points

• 61 points

Answer explanation

To find the total points scored in six games, multiply the mean score of 40 by 6 to get 240. Subtract the sum of the first five games (35+49+39+44+52=219) from 240 to find the points scored in the sixth game, which is 41 points.

How many centimeters of rainfall fell in the fifth year if the total rainfall for the first four years was 65, 77, 53, and 44 centimeters, and the mean rainfall over five years was 66 centimeters?

• 76 cm

• 86 cm

• 96 cm

• 106 cm

Answer explanation

To find the rainfall in the fifth year, multiply the mean rainfall by the total number of years and subtract the total rainfall for the first four years. 66 * 5 - (65 + 77 + 53 + 44) = 86 cm.

Based on the survey results shown, what is the median number of calls made in one day?

• A) 35

• B) 40

• C) 29

• D) 25

Answer explanation

The median number of calls is the middle value when all values are arranged in ascending order. With 40 calls being the middle value in this dataset, the correct answer is B) 40.

What is the median number of trees planted per day by the environmental organization according to the data provided?

• A) 57

• B) 55

• C) 68

• D) 52

Answer explanation

The median number of trees planted per day is 57, as it is the middle value when the data is arranged in ascending order.