SOLVED

299)The standard deviation is an average that is calculated by adding up a set of quantities and dividing the sum by the total number of quantities in the set. 300)Inferential statistics are statistical procedures that organize and summarize research data. 301)If the results of research are not significant at the .05 level then the researchers conclude that their hypothesis was not supported. 302)Results from cross-sectional studies find that older people perform as well as younger individuals on tests of mental functioning. 303)A study in which subjects of different ages are compared at a given time is called a longitudinal study. 304)A study in which subjects of different ages are compared at a given time is called a cross-sectional study. 305)Results from longitudinal studies find that as people age, they sometime perform as well as they ever did on certain mental tests. 306)Meta-analysis combines and analyzes data from many studies, instead of assessing each study’s results separately. 307)Naturalistic observation would be an appropriate research method to study aggressive acts early in childhood. 308)The case study would be an appropriate research method to study the nature of aggressive acts early in childhood.