Chapter 8 Review: Statistics and Multiplication Equations

52 miles per hour

Find the rate of speed of a passenger car if the distance traveled is 572 miles and the time elapsed is 11 hours.

2.5 hr

Find the time if the distance is 157.5 miles and the speed is 63 mph.

Mean

The average of the data values in a set.

Range

The difference between the maximum and minimum values in a data set.

IQR=Q3-Q1

The equation to calculate the IQR is...

Spread

The mean absolute deviation measures the __________ of a set of data

Median

The number in the middle of a data set when the data is organized from greatest to least or least to greatest.

Outliers

Values that are much smaller or larger than most of the data.

First Quartile

What is the median of the lower 50% of data in a set?

Third Quartile

What is the median of the upper 50% of data in a set?

Interquartile Range (IQR)

the middle 50% of the data in a set

9880 feet

Aron is a mountain climber. He has ascended to the top of Pikes Peak in Colorado. The top of Pikes Peak is 14,115 feet above sea level. He begins to descend at an average rate of 1210 feet per hour. After 3.5 hours, what is his new elevation?

82

Find the median: 80, 89, 79, 84, 95, 79, 78, 89, 76, 82, 76, 92, 89, 81, and 123.

3754

Find the outlier: 1376, 1645, 1783, 1455, 3754, 1790, 1384, 1643, 1492, and 1776.

14

Find the outlier: 62, 65, 93, 51, 55, 14, 79, 85, 55, 72, 78, 83, 91, and 76.

51

Find the range of this set of data: 37, 44, 36, 29, 78, 15, 57, 54, 63, 27, and 48.

65 mph

Find the rate if the distance is 247 miles and the time is 3.8 hours.

Statistical question

Determine whether the following is a statistical of non-statistical question: "How much do babies born at Memorial Hospital weigh?"

Non-statistical question

Determine whether the following is a statistical of non-statistical question: "What time do you get out of school in the afternoon?"

105 miles

Find the distance if the speed is 60 mph and the time is 1 hour and 45 minutes.

234.5 miles

Find the distance if the speed is 67 mph and the time is 3.5 hours.

90 miles

Find the distance traveled by a train at 135 miles per hour for 40 minutes.

37.8

Find the mean of this set of data: 34, 31, 37, 44, 38, 34, 42, 34, 43, and 41.

106.67

Find the mean: 116, 104, 101, 111, 100, 107, 113, 118, 113, 101, 108, 109, 105, 103, and 91.

30.3

Find the mean: 25, 34, 35, 27, 31, and 30.

30.57

Find the mean: 29, 28, 34, 30, 33, 26, and 34.

42.5

Find the median of the data set

37.5

Find the median of this set of data: 34, 31, 37, 44, 38, 34, 43, and 41.

First, find the mean of the data set. Then, find the distance between each data value from the mean. Finally, find the average (mean) of those distances.

How do you find the mean absolute deviation in a data set?

add up the numbers, then divide by how many numbers there are

How do you find the mean in a set of data?

197 pages

Over the summer, Gabriel read books that had 192, 202, 175, 219, and 197 pages. Find the average (mean) number of pages in the books he read

22

Solve: x+10=32, x=

12

Solve: x+2x+8=44, x=