Answer:
confounding variable; lowered.
Explanation:
In the field of statistical analysis, a <u>confounding variable</u> is one that influences both the independent variable and the dependent variable. When an experimented is designed, the researcher wants to study the effect the independent variable has on the dependent variable. However, if there's a third variable that can influence them, it can cause a spurious correlation.
The psychologist wanted to test the effects using the new computer program (independent variable) had in helping students learn math (dependent variable). But when she divided the group in two, separating them by gender, she introduced a third variable (confounding variable) that wasn't accounted for when designing the experiment and that can influence either variable. <u>Because of this, the internal validity of the study has been </u><u>lowered</u><u>.</u>
Factors have contributed to total world grain production increasing, but per-person production stagnating Expanded irrigation, fertilization, and new crop.
Grain farmers grow grains which include corn, wheat, rye, and others, which include grain sorghums. Farmers generally focus on or three varieties of grain. Many grain farmers very own their land and work for themselves.
U.S. imports of wheat grain, mainly from Canada, are small however have grown from less than 0.1 million metric tons in the 1970s to a median of two.6 million metric heaps over the past 10 years. Imports of wheat flour and products have averaged nearly 1 million metric lots yearly over the past 10 years
In crop 12 months of 2016/2017, a total of approximately 2.2 billion metric tons of grain have been produced internationally. The maximum essential grain turned into corn, based totally on a manufacturing amount of approximately 1.05 billion metric heaps in that year.
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Charles Cornwallis was the British general who surrendered at Yorktown, although he was a Lieutenant General;)
Hope this helped!
~Ash