Graphs

• What does the symbol "=" represent in mathematics?

  Equality
• What does the symbol ">" signify?

  Greater than
• What does the symbol "<" signify?

  Less than
• What does the symbol "≈" represent?

  Approximately equal
• What does "proportional to" indicate in mathematics?

  One quantity changes with another
• What is the meaning of "standard deviation" in data presentation?

  It measures data dispersion
• What are the different ways to present quantitative data?

  • Tables: data in columns and rows
  • Bar charts: categories on x-axis, frequency on y-axis
  • Histograms: bars touch, continuous data
  • Line graphs: show changes over time
  • Scattergrams: correlation analysis with continuous data
• What characterizes a normal distribution?

  Symmetrical shape with mean, median, mode at center
• In a negatively skewed distribution, where is the mean located?

  To the left of the median
• What does a positively skewed distribution indicate about the data?

  Most data points are concentrated on the left
• What is the relationship between mean, median, and mode in a negatively skewed distribution?

  Mode > Median > Mean
• How do you convert a decimal to a percentage?

  Multiply by 100
• What is the significance of significant figures in a number?

  They indicate precision of measurement
• What is the purpose of standard form in mathematics?

  To express very large or small numbers
• How would you express the number 320000 in standard form?

  3.2 x 10^5
• How would you express the number 0.000032 in standard form?

  3.2 x 10^-5
• What are the steps to reduce a fraction?

  1. Find the greatest common divisor (GCD)
  2. Divide both numerator and denominator by GCD
• What are the types of ratios in mathematics?

  • Part-to-part ratio
  • Part-to-whole ratio
• What does "decimal places" refer to?

  Digits to the right of the decimal point
• How many significant figures does the number 0.002473691 have?

  Three significant figures
• How do you round the number 23,450 to two significant figures?

  23,000
• What does the term "common denominator" refer to in fractions?

  A shared multiple of the denominators
• What is the meaning of "part-to-part ratio"?

  Comparison between two parts of a whole
• What is the meaning of "part-to-whole ratio"?

  Comparison of one part to the entire whole
• What does "mean" refer to in statistics?

  The average of a set of numbers
• What does "median" refer to in statistics?

  The middle value when data is ordered
• What does "mode" refer to in statistics?

  The most frequently occurring value
• What does "standard deviation" measure in a dataset?

  How spread out the values are
• What is the significance of a histogram in data presentation?

  It shows frequency distribution of continuous data
• What does a line graph represent?

  Changes over time with data points connected
• What is the purpose of a scattergram?

  To analyze correlation between two variables
• What does a negatively skewed distribution indicate about data points?

  Most data points are concentrated on the right
• What does a positively skewed distribution indicate about data points?

  Most data points are concentrated on the left
• What is the relationship between mean, median, and mode in a positively skewed distribution?

  Mean > Median > Mode
• What does the term "decimal" refer to in mathematics?

  A fraction of a whole expressed in base 10
• What does "significant figures" indicate in a number?

  The precision of the number's measurement
• How do you express a very small number in standard form?

  Using a negative exponent
• How do you express a very large number in standard form?

  Using a positive exponent
• What does the term "power of ten" refer to?

  Exponent indicating the number of zeros
• How do you convert a fraction to a decimal?

  Divide the numerator by the denominator