Tablas estadísticas Medidas estadísticas Variable Bidimensional Probabilidad Variable Aleatoria Inferencia estadística Gráficas Gestión de alumnos
 
Tablas estadísticas

Tablas estadísticas

  1. The set of all elements of data whose characteristics are being studied are called:
    1. Population
    2. Sample
    3. Variable
  2. A cleaning company wants to conduct a study on the effectiveness of a new product. To do this it tests and analyses one in every 50 cans of this product. The set of products analysed is called the:
    1. Population
    2. Sample
    3. Variable
  3. A variable is variable if…
    1. data can not be written down as numbers.
    2. data can be written down as numbers.
    3. neither of the above.
  4. The number of lottery winners is a:
    1. quantitative variable.
    2. qualitative variable.
    3. neither of the above.
  5. The number of text messages sent by the students of a secondary school over a weekend is a:
    1. quantitative variable.
    2. qualitative variable.
    3. neither of the above.
  6. The number of times a piece of data (score) occurs in a set of information is called:
    1. Frequency
    2. Relative frequency
    3. Percentage
  7. We can calculate the cumulative frequencies when working with :
    1. qualitative variables
    2. quantitative variables
    3. both of them
  8. The class midpoint is:
    1. The value halfway between the lower and the upper class limits.
    2. Each of the individuals in a continuous quantitative variable.
    3. The arithmetic mean of all the values of a quantitative variable.
  9. The difference between the greatest number and the least number in a set of numbers is called the:
    1. Arithmetic mean
    2. Range
    3. Mode
  10. The sum of all relative frequencies:
    1. comes to the total number of observations.
    2. is equal to the sum of all frequencies
    3. comes to 1