Sats #2

• What statistical measures are covered in this video?

  Mean, median, mode, and range
• Why are mean, median, mode, and range important?

  They provide more information about data
• What is the first step in finding mean, median, mode, and range?

  • Order data from least to greatest
• How do you find the mean of a data set?

  Add all numbers and divide by count
• If the sum is 753 and there are 9 numbers, what is the mean?

  $83.67$
• What does the median represent in a data set?

  The middle number of the ordered data
• How do you find the median in an odd-numbered data set?

  Identify the middle number
• What is the mode in a data set?

  The number that occurs most frequently
• Can a data set have more than one mode?

  Yes, if multiple numbers occur most frequently
• How is the range of a data set calculated?

  Largest number minus smallest number
• What are the steps to find mean, median, mode, and range?

  1. Order data from least to greatest
  2. Calculate mean: sum divided by count
  3. Find median: middle number
  4. Determine mode: most frequent number
  5. Calculate range: largest minus smallest
• How does the mode differ from the mean and median?

  Mode is the most frequent number
• What happens if there is an even number of numbers in the data set?

  Average the two middle numbers for median
• What is the purpose of calculating range?

  To see how spread out the data is
• What does a range of 25 indicate about the data?

  The data spans 25 units apart
• What are the two axes of the coordinate plane?

  x-axis and y-axis
• How do the x-axis and y-axis divide the coordinate plane?

  They intersect and create four quadrants
• What are the names of the four quadrants in the coordinate plane?

  • Quadrant One
  • Quadrant Two
  • Quadrant Three
  • Quadrant Four
• Which quadrant is located in the upper right section?

  Quadrant One
• What are the signs of the coordinates in Quadrant One?

  Both coordinates are positive
• Which quadrant is located in the upper left section?

  Quadrant Two
• What are the signs of the coordinates in Quadrant Two?

  X coordinates are negative, Y coordinates are positive
• Which quadrant is located in the lower left section?

  Quadrant Three
• What are the signs of the coordinates in Quadrant Three?

  Both coordinates are negative
• Which quadrant is located in the lower right section?

  Quadrant Four
• What are the signs of the coordinates in Quadrant Four?

  X coordinates are positive, Y coordinates are negative
• What are the signs of coordinates in each quadrant?

  • Quadrant One: Positive, Positive
  • Quadrant Two: Negative, Positive
  • Quadrant Three: Negative, Negative
  • Quadrant Four: Positive, Negative
• What is the main takeaway about the quadrants of the coordinate plane?

  Each quadrant has specific signs for coordinates
• What topic is Mr. J discussing in the video?

  Ratios
• What is the importance of order in writing ratios?

  • Order matters in ratios
  • First item in problem is first in ratio
• How can the ratio of strawberries to oranges be written?

  4 to 2
• What does the colon represent in the ratio 4:2?

  It separates the quantities of two items
• What is the fraction representation of the ratio of strawberries to oranges?

  $\frac{4}{2}$
• Why should ratios be simplified?

  To express them in their simplest form
• What is the greatest common factor of 4 and 2?

  2
• What is the simplified ratio of strawberries to oranges?

  2 to 1
• What does the simplified ratio 2:1 represent?

  2 strawberries for every 1 orange
• What is a part-to-whole ratio?

  It compares a part to the total group
• How many total pieces of fruit are there?

  6 pieces of fruit
• What is the ratio of oranges to total pieces of fruit?

  2 to 6